zorowitz_2023_data

two-step-task psych-101

Unpublished pilot data from 149 participants recruited on Prolific (Aug–Dec 2021, online, gamified "space-themed" two-step task code available from the Niv lab jspsych-demos repo). Each participant completed 201 two-stage trials: a first-stage choice between two stimuli, a probabilistic (common 70% / uncommon 30%) transition to one of two second states, a second-stage choice between the two stimuli of the state reached (four second-stage stimuli in total), and a reward (0/1) determined by drifting contingencies (drift_ix schedules). Three experiments manipulate whether first- and second-stage stimuli occupy random or fixed left/right screen positions: Experiment 1 (N=50) = full randomization, Experiment 2 (N=50) = fixed positions, Experiment 3 (N=49) = first-stage randomized, second-stage fixed. Two-step (Daw) task: sequential decision-making under uncertainty, assessing model-based vs model-free reinforcement learning. Standard signatures reproduce when the three experiments are pooled (model-free reward effect and reward x transition interaction; see `analysis.py`); per experiment, see the Modeling reproduction section. Data collected for task piloting purposes.

Responses
59,898
5,628 held out
CORE effects
–
no effects simulated
CORE test NLL (avg)
0.470
rank 3 of 7 models
Best model
Centaur
test NLL (avg) 0.445

Likelihood of human responses

modelPNLLtest NLL (avg)test responses train NLL (avg)train responses
CORE2,643.70.46975,6280.496854,270
CORE (no prediction errors)2,780.80.49415,6280.509254,270
CORE (no phonemes)2,617.40.46515,6280.494054,270
CORE (no forgetting)2,689.10.47785,6280.504454,270
CORE (no hierarchy)3,948.20.70155,6280.705554,270
Transformer3,240.10.57575,6280.580854,270
Centaur best2,506.40.44535,628––

Experiments

exptask classparticipantsresponsesconditionssimulatedeffects
exp0TwoStepTask5020,1001no–
exp1TwoStepTask5020,1001no–
exp2TwoStepTask4919,6981no–

Behavioral effects

No behavioral effects were simulated for this study.

Transcript

You are playing the Space Treasure game, where you visit alien planets to collect treasure. Each planet has aliens on it, and when you trade with an alien it gives you either treasure or junk. Treasure is valuable; junk is worthless. An alien may not give you treasure every time, and some aliens are more likely to give you treasure than others. Your goal is to figure out which aliens are most likely to give you treasure and trade with them. To reach a planet, you first pick a rocket ship: each rocket has a planet it usually flies to, but sometimes it goes to the other one. To pick a rocket or an alien you press the single letter shown beside it. At the end, your total treasure is converted into a performance bonus, so try to collect as much as you can.
The left/right screen positions of the rockets and aliens are reshuffled at random on every trial. Trial by trial:
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press B for the left rocket. Your rocket takes an uncommon route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press B for the left rocket. Your rocket takes an uncommon route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press B for the left rocket. Your rocket takes an uncommon route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press B for the right rocket. Your rocket takes a common route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press B for the left rocket. Your rocket takes a common route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press B for the right rocket. Your rocket takes a common route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press D. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press C. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive treasure.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.
Two rockets appear, one on the left (letter B) and one on the right (letter D). You press D for the right rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes an uncommon route and you arrive at planet 1. On this planet two aliens stand: alien B and alien D. You press B. You receive junk.
Two rockets appear, one on the left (letter D) and one on the right (letter B). You press D for the left rocket. Your rocket takes a common route and you arrive at planet 2. On this planet two aliens stand: alien A and alien C. You press A. You receive treasure.