Activision commissioned TwitchGames, makers of Slice HD, to create a Prototype 2-themed minigame available now for iOS devices on the iTunes App Store. It's a big free ad for the upcoming game, but it's also a small free game that utilises the multitouch interface in a challenging way.
Like Slice HD, your job is to move blades out of the way to expose an "eye" target. In this case, the blades are the notorious arm-blades swung by Sgt Heller and the other shapeshifters from the franchise. Being a multitouch game, you'll find yourself holding blades back with four fingers and using your nose to swipe the eye. It's a solid challenge. If you have an iPhone or iPad, go get it.