Play through the story mode with a (color-swapped) friend using a link cable. The only difference to single-player is that the cutscenes are not played.
Zeus, Creator and Ruler of the Guardians of the Gates, raises you from your grave! To this end you must go forth and defeat a new, unknown evil that has been ravaging the universe to collect the keys and essence of each world.
This page contains co-op info for Altered Beast: Guardian of the Realms on the GameBoy Advanced [Classics]. All information about Altered Beast: Guardian of the Realms was correct at the time of posting. Information is subject to change. If you see any errors please email us.