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You are a hero raised from the dead by the god Zeus to rescue his daughter Athena. With scenery inspired by Ancient Greece, you have to fight hordes of undead and demons, with a boss at the end of each level until you meet the god Neff, who holds the girl captive.

The Altered Beast title refers to your shapeshifting abilities. In this platformer, you can collect spirit balls by defeating two-headed wolves, allowing you to mutate into different beasts such as a werewolf, a dragon, a tiger, a bear and others depending on the version. Each form, tied to a level, comes with special abilities such as flight and powerful attacks, easily superseding the basic set of punches and kicks in your human form.

The game can be played in single player mode, or in same-screen multiplayer co-op mode.


Altered Beast Commodore 64 White dogs contain power ups
Altered Beast Commodore 64 The first boss
Altered Beast Commodore 64 With special abilities
Altered Beast Commodore 64 You turn into a werewolf

Promo Images

Altered Beast Screenshot
Altered Beast Screenshot
Altered Beast Screenshot
Altered Beast Screenshot


Alternate Titles

  • "獣王記" -- Japanese spelling
  • "兽王记" -- Chinese spelling (simplified)
  • "Jūōki" -- Japanese title
  • "Altered Beast Classic" -- iOS and Android release title
  • "3D Altered Beast" -- Nintendo 3DS title

Part of the Following Groups

User Reviews

There are no reviews for the Commodore 64 release of this game. You can use the links below to write your own review or read reviews for the other platforms of this game.

Critic Reviews

Commodore User Oct, 1989 78 out of 100 78
Commodore Format Dec, 1991 75 out of 100 75
Computer and Video Games (CVG) Nov, 1989 73 out of 100 73
Zzap! Dec, 1989 73 out of 100 73
The Games Machine (UK) Dec, 1989 64 out of 100 64
ASM (Aktueller Software Markt) Oct, 1989 5.4 out of 12 45
Retro Archives Feb 22, 2019 7.5 out of 20 38
Power Play Nov, 1989 17 out of 100 17


There are currently no topics for this game.



A version of Altered Beast is included in Sega's Smash Pack compilation CD.

Genesis pack-in game

This game was the first pack-in game to come with the Genesis when it first came out in 1989.


The Brazilian Heavy metal band Megadriver, specialized in SEGA MegaDrive music, did a cover of the first level theme, complete with one of the band members saying "Rise from your grave".


The ride-able lizard-birds from Golden Axe make a cameo appearance in the second stage. Bizarrian, a hybrid between an amphibious and a parrot, is also present in Golden Axe.

Version differences

The NES version adds 3 new stages and 2 unique transformations: a shark, an a bird. On the other hand, the SMS version removes the tiger level. The Zodiac release is an emulation of the Genesis version, but for one player only.


  • Power Play
    • Issue 01/1990 - Biggest Failure of 1989
Information also contributed by Mad_Griffith, Matthew Melbourne, Robbb and Zovni

Related Web Sites

PCGamer77 (3235) added Altered Beast (Commodore 64) on Apr 09, 2003
Other platforms contributed by Luiz Pacheco (1305), mars_rulez (43904), GTramp (64874), PCGamer77 (3235), Lain Crowley (6785), Guy Chapman (2001), Sciere (630658), Zovni (10638), Foxhack (30109), Martin Smith (67716), ZZip (829), Terok Nor (28924), The cranky hermit (2905), Scaryfun (17922), Ben K (23901), koffiepad (10514), Katakis | カタキス (41284) and Syed GJ (1578)