Galactic Wrestling: Featuring Ultimate Muscle, known in Japan as Kinnikuman Generations (キン肉マン ジェネレーションズ, Kinnikuman Generations?), is a PlayStation 2 game produced by Bandai and sold on April 22, 2004.
Galactic Wrestling: Featuring Ultimate Muscle is an expansion of the GameCube game Kinnikuman Nisei New Generation vs. Legends (キン肉マンII世 新世代超人VS伝説超人, Kinnikuman Nisei New Generation vs. Legends?), sold November 22, 2002. The game's name, in Japan, is often abbreviated as Niku Gene (肉ジェネ, Niku Gene?).
The game itself has an expansion called Kinnikuman Muscle Generations (キン肉マン マッスルジェネレーションズ, Kinnikuman Muscle Generations?), sold February 2, 2006 for the PlayStation Portable. This article contains explanations on the GameCube and PSP versions as well.
A professional wrestling game based on the popular 1980s manga series Kinnikuman and its sequel Ultimate Muscle (Kinnikuman Nisei), The Choujins from the first Kinnikuman (Legends) reappear via 3D Polygon and compete against the Nisei Choujins (New Generation) in their younger bodies.