Altered Beast © 1989 SEGA of America, Inc.
North American release. For more information about the game itself, please see the original Japanese release entry; "Juuouki [Model G-4001]
Description from the back cover:
Enter a time when men were warriors and Gods ruled the world. A time of good against evil, a place of danger. Summoned by Zeus to rescue Athena, you will infiltrate the Underworld with the power to transform into mythical creatures with supernatural strength.
Level 1: Become a savage Werewolf and use teeth and nails to shred your enemies to pieces. Capture 3 of the elusive Spirit Balls and you'll be transformed into a ferocious, fireball throwing Werewolf.
Levels 2 and 3: Take flight as Weredragon and use fiery force to fry the followers of Neff. Creep across slippery crevasses inside a deep cavern as the crafty Werebear.
Levels 4 & 5: Stalk the gates of the Underworld fortress as a man-eating Weretiger, a predator with no pity. Inside the inner sanctum call on Golden Werewolf's might to demolish Neff the demon - forever!