zero-sum game

English Thesaurus

1. a game in which the total of all the gains and losses is zero (noun.act)

hypernym	:	game,
definition	:	a contest with rules to determine a winner (noun.act)

domain category	:	game theory, theory of games,
definition	:	(economics) a theory of competition stated in terms of gains and losses among opposing players (noun.cognition)