Altered Beast is a 1988 beat 'em up video game developed by Team Shinobi and published by Sega for arcades. Set in Ancient Greece, the game follows a Roman centurion who is resurrected by the Olympian god Zeus to rescue his daughter Athena from Neff, the demonic ruler of the underworld. By collecting three power-ups in a level, the player character can transform into one of five mythical beasts.