Gitaroo Man is a rhythm video game featuring visual production by Mitsuru Nakamura and an original soundtrack by Japanese band COIL. The game was later ported to the PSP under a new title: Gitaroo Man Lives!

The player character is U-1, a young boy who is frequently ridiculed by classmates and passed over by Little Pico, the girl of his dreams. The story proper begins when Puma, a dog with the ability to speak, teaches U-1 to play the guitar, simultaneously teaching the game's controls to the player, and subsequently reveals to him that he is the last legendary hero of Planet Gitaroo and the possessor of the Last Gitaroo. When they are then attacked, Puma transforms into Puma AC-30 and gives U-1 the Gitaroo, transforming him into Gitaroo Man.