The reigning king of the handheld world and Nintendo's first real upgrade to the Game Boy line of handhelds in over ten years.  Not only does this sport a huge leap forward in visuals and in sound, it also introduced several new concepts like single cartridge multiplayer games and connectivity with a home console (The Gamecube).  However, just as it is with all Game Boys sadly, the number of rushed pieces of crap games released is quite high.  The Dragon Ball franchise has tried it's hardest not to fall into the same trap so many other licenses have fallen into.

Dragon Ball Z: Collectible Card Game

Dragon Ball Z: Taiketsu

Dragon Ball Z: The Legacy of Goku

Dragon Ball Z: The Legacy of Goku II