It's a simulation game based in games theory, specifically the Iterated Prisoner Dilemma, that means it is a non-zero sum game with repeated interactions. It's kind of hard to explain. It's a turn based game where you modify some values of each character, then hit >> and hope they all win, witch means that they must "survive". A character gain or lose points interacting randomly with each other, and if they get lose all points they "die". The results of the interaction depends on the chance of cooperation of each one. This is all explained in the manual. It's is a hard to grasp game, but it is unique, and it can be used as research or educational tool, simulating different situations where the challenge is to keep the equilibrium of cooperation between unpredictable actors.