Opera House glitch

The glitch in action  1JVBgYSh3cQ The Opera House Glitch is a glitch found only in the Japanese version of Final Fantasy VI. The glitch involves leaving one of the rats in the attic alive until the World of Ruin. Upon being defeated by it in a battle, the player will be whisked away to the World of Balance instead of the World of Ruin. However, this is a harmful glitch as the player will be unable to return to the World of Ruin, thus unable to complete the game.