THQ today announced that The Fairly OddParents: Shadow Showdown, for the PlayStation 2, GameCube, and PC, has shipped to retail outlets nationwide. In addition to expanding on the single-player mode featured in the first game, Breakin' Da Rules, Shadow Showdown features multiplayer minigames. The PlayStation 2 version contains a making-of documentary. The Game Boy Advance version of the game will ship on September 20.