In the repeated rock-scissor-paper (RPS) game, players accumulate knowledge about their opponent's playing strategies over many back-to-back games, and advantages are gained and lost as each player tries to outsmart the other. This experiment seeks to understand whether players can gain an advantage against opponents playing RPS according to a simple rule unknown to the player.

You'll play against 3 bots in 3 best-of-10 tournaments. Each bot has its own rules, which it will occassionally fail to follow, for deciding the next move. It might play like a 2 year-old with a penchant for scissors, or maybe something a bit trickier like "don't stay with a losing hand". You might not completely figure out a rule, but might learn enough to gain an advantage.

You can go straight to the tournament, or you can first practice playing RPS against the computer in a short 10 game round.

Please enter Participant ID:
We'll tell you your participant ID after you finish the tournament. If you enjoyed the experiment and choose to participate again, this ID allows us to compare your results across multiple tournaments and assess how reproducible and consistent they are. We don't collect any identifying information from you, so the randomly generated participant ID you voluntarily tell us is the only way we can identify experimental data that are from the same participant. Sharing your ID with us is optional, but adds value in our analysis of the data.