Well, I know that there are a giant slew of Naruto games out there. There's the Narutimate Hero series, and Uzumaki Ninden (on PS2), the Gekitou Ninja Taisen series (GC), the Naruto RPG series (GBA and DS), the Saikyou Ninja Daikesyuu series (sidescrolling action games, 2 on GBA, 1 on DS) and Konoha Senki (a tactics game on the GBA). So far, Saikyou Ninja Daikesyuu 1 is coming out renamed Naruto: Ninja Council, and the Gekitou Ninja Taisen 1 on GC is being renamed Naruto: Clash of the Ninja. Like Hank said, Nintendo is probably paying out a large sum of money to have Bandai (at least temporarily) keep Naruto on the Nintendo systems. And because this is Bandai, who released the .hack games (which could have easily been one, or maybe two games tops) in a four game set. They'll probably release Clash of the Ninja 2 a couple months later, after all of its characters are introduced, then follow up with 3 soon after. But 1 is really lacking in characters...which is the cool point of 3.