- Console
- Game Boy Advance
- Released
- 2002
- Developer
- 3d6 Games
- Publisher
- Sega
- Genre
- Beat 'em Up
- Players
- —
Altered Beast: Guardian of the Realms
Zeus, creator and ruler of the Guardians of the Gates, raises you from your grave! You must go fourth and defeat a new, unknown evil that has destroyed the Guardians and ravaged the universe. To do so, you must collect the keys and Essence of each land, transforming you into beasts with unnatural powers and special abilities. Conquer this evil and you will become the sole Guardian, the protector of the universe.
Loose: game only · CIB: original box and inserts · Sealed: unopened factory wrap
Average price · NTSC (North America)
$83.00
Last sold
$83.00
Sep 8, 2026
12-month change
+3.1%
● Live market price — last checked Oct 5, 2026 by the RetroPrice bot.
Price history
Monthly complete in box average in the NTSC (North America) market, last 12 months.