Metagame

The Metagame, or game about the game, is any approach to a game that transcends or operates outside of the prescribed rules of the game; uses external factors to affect the game; or goes beyond the supposed limits or environment set by the game. Metagaming might also refer to a game which functions to create or modify the rules of a sub-game. Thus, we might play a metagame selecting which rules will apply during the play of the game itself. https://en.m.wikipedia.org/wiki/Metagaming

See MetaLevel, GamePlaying, NomicGame, InfiniteGame