Dark World

The Dark World is basically a corrupted Hyrule in the SNES video game The Legend of Zelda: A Link to the Past. In the game, Ganondorf constructs this parrel world using the Triforce he stole in the events that took place in The Legend of Zelda: Ocarina of Time. When the protagonist Link enters this world, he'll turn into a bunny rabbit whith limited to no abilities. The only way he can return to his normal self is if he manages to use the Moon Pearl. In the end of the game, the Dark World is ultimately destroyed, in a since.