Want to see what happens when Goku battles Naruto? Then Battle Stadium D.O.N. (D.O.N. stands for Dragonball One Piece Naruto) is for you. You can act out your dream battles in 3D with characters from One Piece, Naruto and DBZ. While it may not have as many combatants as Jump Superstars, D.O.N. looks like a solid entry as an anime crossover fighting game. The game is set for a release in July 20th for the Playstation 2 and Gamecube. Check out this scan for more details.
Thanks for the tip EvilGamerX!