Game stoppers are a type of griefer usually found in Player Owned House parties. What happens is a group of players is playing a game that is banishable, such as elemental balance or hangman. While they are playing, someone comes up and banishes their game. The griefer will keep banishing every game that is set up, and sometimes taunts the players who are trying to play the game. Unfortunately, you cannot report this griefer for breaking rules, since banishing games is not against the rules. All this causes is a large amount of arguments between the game players and the game stopper.