Altered Beast: Guardian of the Realms for Nintendo Gameboy Advance is an action-packed video game released in 2002 by THQ. The game allows for 1-4 players to engage in exciting gameplay on the popular GBA platform. With a Teen rating and mild violence ESRB descriptor, gamers can immerse themselves in the world of Guardian of the Realms, where they will encounter challenges and foes as they explore the various realms. The game offers a thrilling experience for fans of action and adventure genres, making it a must-have for enthusiasts of classic gaming.