Wario World is a 3D platform game developed by Treasure and published by Nintendo for the GameCube. The game's plot centers on Wario and his quest to regain his treasure and his castle from Black Jewel, an evil gem.

The game was fairly well received by reviewers, who praised the game's fun gameplay while criticizing its short length.

Wario World's gameplay centers mainly on combating enemies, although it requires some platform navigation similar to Super Mario 64 and Super Mario Sunshine. The controls are simple, and are only used to jump, run, dash, perform fighting moves, and use the "Hyper Suction" ability to collect nearby coins. The level designs are platform-based with combat elements, and have an overall linear design. The levels contain trapdoors, which lead to special platforming or puzzle-oriented challenges. Throughout the game, small forest sprites known as "Spritelings" give Wario advice if they are rescued from imprisonment.