The highest level of
strategy in many complex games,
metagame refers to any aspect of strategy that involves thinking about what your opponent is thinking you are thinking.
Metagame comes into play in any game where no single strategy is dominant and opposing sides are aware of multiple strategies that can succeed
dependent upon opponents' actions. In order to perform at the highest level, it then becomes necessary to think about what your opponent thinks you will do (which may depend on what he thinks you think he thinks he will do, etc.) and to make decisions based on
clues regarding what level they are thinking on.
This term is most commonly used to refer to
poker and other complex card games, but is increasingly being used in relation to video games with complicated player vs player elements and even traditional sports.