A Misère Game is a game that is played according to its conventional rules, except that it is "played to lose"; that is, the winner is the one who loses according to the normal game rules.
Nowhere are misère games more utilized and discussed than in games of the Nim family, such as Nim itself.
A Misère form of Backgammon is known as Losing Backgammon or Deadgammon and follows exactly the same rules as regular Backgammon, only that the objective is to not bear off all of your checkers: to lose. These games can take a long time to play.