decisions and game theory
concepts
A game in strategic form is defined by a set of players, a set of strategies for each player, and a payoff function for player defined over all combinations of strategy choices made by the players. In the event that the sum of the payoffs of all of the players is constant, irrespectively of the strategy choices made, the game is constant-sum and, if the constant is zero, the game is zero-sum. [Source: Encyclopedia of Power; Variable-Sum Games]
variable-sum games