Chris Buffa (Modojo): Talk about a strange week. At first, we expected Sega's Jet Set Radio to sweep both iOS and Android. Turns out, lackluster controls torpedoed that idea. Then, we figured Glu Mobile's Contract Killer Zombies 2 Origins would shamble its way into the Android winner's spot, but it didn't come out for that platform. This left room for a week's old favorite to make a return, while on the iPhone and iPad front, an MMO earned top honors.