wario_world
Spin-off of the Wario Land series and the only 3D entry of the entire Wario franchise, released on the Nintendo_Gamecube and developed by Treasure_Co.,_Ltd.
Wario, surrounded by treasures he's pilfered from all around the world and a newly constructed castle, is flipped upside down when one of the jewels he stole was actually the Black Jewel, an evil that destroyed a civilization long ago. The Black Jewel begins transforming his castle into it's own world and turns all of his treasures into monsters, making Wario vow for revenge.