From Cheats S30SCI Movie, Cheating in online games is an activity that modifies the game experience to give one player an advantage over others. Depending on the game, different activities constitute cheating and it is either a matter of game policy or consensus opinion as to whether a particular activity is considered to be cheating.

Johan Huizinga defines cheating as the action of pretending to obey the rules of the game, while secretly subverting them to gain advantage over an opponent.

Cheating reportedly exists in most multiplayer online games, but it is difficult to measure. The Internet and darknets can provide players with the methodology necessary to cheat in online games.