The Game (mind game) - Wikipedia, the free encyclopedia:
There are three rules to The Game:
1. Everyone in the world is playing The Game. (Sometimes narrowed to: "Everybody in the world who knows about The Game is playing The Game", or alternatively, "You are always playing The Game.")
2. Whenever one thinks about The Game, one loses.
3. Losses must be announced to at least one person (a statement such as "I lost The Game" is often used).
Some players allow a grace period of up to half an hour after someone has lost, during which a player cannot lose The Game again, or is not obliged to announce a loss. According to the common rules, The Game is never ending and there is no way to win. However, one variation of The Game ends when the British Prime Minister announces "The Game is up" on television.