 The essential point of this exercise is often missed.Wittgenstein's point is not that it is impossible to define "game", but that "even if we don't have a definition, we can still use the word successfully".Everybody understands what we mean when we talk about playing a game, and we can even clearly identify and correct inaccurate uses of the word, all without reference to any definition that consists of necessary and sufficient conditions for the application of the concept of a game.