id Software has released Rage, its highly-anticipated first-person rail shooter for the iOS platform. Announced earlier this month, Rage for iOS is built on the same Tech 5 game engine that is being used for the upcoming PC/console game. The iOS version provides a subset of the full game built around the Mutant Bash TV combat game show from the Rage world. Rage HD for iOS is an on-rails shooter that takes the player through a wasteland stalked…