Answer: zerosum

AnswerCrossword Clue
ZEROSUM..-game: situation in which gains equal losses
ZEROSUMLike chess, in game theory
ZEROSUMLike a game in which wins equal losses
ZEROSUMLike a system with equal gains and losses
ZEROSUMHaving nothing lost or gained
ZEROSUMLike games without win-win outcomes
ZEROSUMLike a game with equal winners and losers