Chaos League is a fantasy-based sports management game developed by Cyanide and published by Digital Jesters in 2004. The game is a fantasy spin-off of American Football, similar to Games Workshop's Blood Bowl, including fantasy races, magic and the ability to kill members of the opposing team. The game has also spawned an expansion entitled Chaos League: Sudden Death in 2005. The game also features elements of black humour like obscure character designs and comical commentary. The game uses the controversial StarForce copy prevention mechanism.