The Game Boy Advance is Nintendo's latest edition to the popular portable videogame system (not including the SP). Displays thousands of colors with 32-bit graphics. Tons of memory and a much bigger screen than the Game Boy Color's. Plays cartridges smaller but wider than GBC games. Plays ALL Game Boy games (original, Pocket, Color, Advance). Better speaker with great sound and voice cards. Power light is green when battery power is good and red when low. No infered communitcator. Up to to 4 GBAs can link up for multiplayer games. Can attach to GameCube with  special link cable. Takes two AA batteries (comes with a pair). Games are great. Games are NOT included.