To say there's fierce competition on the App Store would be a huge understatement. It's almost a guarantee that quality games have a plethora of clones, for better and worse. The release of PapiJump, for instance, spawned a small army of titles that challenged players to keep a character in the air, bouncing on platforms to ascend the screen. Chillingo apparently loved the concept, as the publisher designed a similar entry for iPhone and iPad called Let's Jump.
Chris Buffa (Modojo)