Pretty much what the title says. I'm looking for a nice beat 'em up on the DS that I can easily pick up and play to kill some time. Barring the DS, I'll settle for the GBA. Any similarities to Streets of Rage, Astro Boy: Omega Factor, and the old Ninja Turtle games are a bonus (I'd add Final Fight, but I've never played that series, soooooooo…).
Anyone have any recommendations?