In game theory, a subgame is any part of a larger game that can be considered separately from other parts. It refers to a smaller game within a larger game and is used when analyzing strategic interactions between players in sequential games or repeated games. A subgame is often represented by breaking down the entire game into smaller segments where each segment represents a decision point for one of the players involved, with subsequent decisions being based on the outcomes of previous ones. The term "subgame" can also refer to any situation within a larger context that follows its own set of rules or logic.