Take the beloved Canabalt-style Robot Unicorn Attack game, remix it with some heavy music and aesthetic, and you've got the new iOS-exclusive version,which is available now on the App Store. That's really all you need to know -- give the online version a play if you haven't yet, and you'll see how much fun dashing and jumping with a robot unicorn can be. Sure, it's simple, but it's fun, and with the heavy metal tune playing in the background, it's even more awesome.
And it's only US 99 cents; that's two bucks cheaper than the classic Erasure version. Great game, great price, and a great exclusive iPhone experience to boot.