A finite game is symmetric when all players have the same pure strategies and permuting the players permutes their payoffs. In the anonymous special case, a player's payoff depends on their own action and the multiset of opposing actions. A symmetric equilibrium exists even when there are more than two players, by the gain-map proof of symmetric equilibrium.
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A finite game is a concept chiefly derived from game theory and is often contrasted with infinite games. Finite games have specific characteristics: 1. **Defined Rules:** Finite games have clear and fixed rules that determine how the game is played. 2. **Clear Objectives:** Players in a finite game have specific goals that they strive to achieve, such as winning or reaching a certain score.