Mario Party 5 is a party video game developed by Hudson Soft and published by Nintendo for the GameCube. It is the fifth installment in the Mario Party series and the second game in the series to be released for the GameCube. It was first released in North America and Japan in November 2003, followed by Europe a month later. The game is set in the fictional Dream Depot, consisting of seven game boards. The single-player "Story" mode involves the player winning multiple games against the Koopa Kids to prevent Bowser from conquering the Dream Depot. The main multiplayer game mode consists of four characters from the Mario series playing a board game, with each board having a set theme. The game also features several minigames, which are played after every set of turns. Mario Party 5 introduces the "Super Duel" mode to the franchise, which requires players to assemble and control custom made battle vehicles which can be used in combat against other machines. The game features ten playable characters, with playable debuts to the series from Toad, Boo, and Koopa Kid.

The GameCube is a home video game console developed and marketed by Nintendo. It was released in Japan on September 14, 2001, in North America on November 18, 2001, in Europe on May 3, 2002, and in Australia on May 17, 2002. It is the successor to the Nintendo 64 (N64) and the predecessor to the Wii. As a sixth-generation console, the GameCube primarily competed with the PlayStation 2 and the original Xbox.