The Bactra Review   Individual Strategy and Social Structure
That is, Young considers situations in which a finite number of agents (players) chose from a finite number of options (moves) at discrete time-intervals, and each receives a pay-off which is a function of its own move, and the moves of all other agents. Each player can have a different set of available moves, and each player can have a different pay-off function. (Strictly, we're dealing with roles, not players.)