1) For best results turn on Turbo Mode. (shift+green flag) 2) For each of 3 rounds within a level, one of the characters will be chosen randomly. Score a point and receive some coins by clicking on the chosen character. 3) Click hint to spend a coin to reveal a ball whose color distribution matches that displayed under the correct character. 4) You must get at least 2 of 3 correct to advance to the next level.
This game is designed to help develop intuition about Bayes' Theorem. See https://en.wikipedia.org/wiki/Bayes'_theorem As hints are requested, the game uses Bayes' Theorem to reevaluate the likelihood that each character is correct given the evidence.