BattleBlock Theater is released by The Behemoth as a platform game available on Xbox Live Arcade and later on other platforms.
Various prisoners arrive at the theater-shaped island after crashing on the strange archipelago controlled by cats.
The cats build the BattleBlock Theater to contain and control the prisoners while entertaining themselves with forced battles.
Prisoners are forced to compete in deadly platforming challenges inside the theater to entertain their cat captors.
Hatty Hattington becomes cursed and loses his mind when he picks up the mysterious gem, turning from leader to antagonist.
Hatty, driven mad by the gem, enslaves the cats and increases the difficulty for prisoners in the theater.
The prisoners begin to fight back to reclaim the theater and free themselves from Hatty’s control.
The prisoners defeat the guards and challenges to rescue Hatty from his gem-induced madness.
With Hatty freed, the prisoners take control of the BattleBlock Theater, ending their imprisonment and the cats’ tyranny.