We got a tip via email (thanks Sam) that RAGE had hit the iPhone/iPad early, so we started downloading it. Two bloody hours later, it was installed on our office iPad and it turns out it's pretty impressive.
It's on rails, but it actually uses the id Tech 5 engine, and looks absolutely incredible. It's one of the few iPad games on the market that could truly pass for a console game.
Being on rails suits the iPad controls to an extent, which use a pretty intuitive touch system for aiming, but we were mostly just impressed by how much the team have managed to squeeze out of the iPad. It's also available on the iPhones in a lower resolution, but if possible we recommend getting a hold of the iPad version.
It's a hefty download (over 700MB) so we wouldn't recommend using 3G to download it, but it's worth the wait! It's blatantly more of a demo for the upcoming full priced console version, but it's a lot of fun nonetheless.
You can pick it up on the App store for $1.19, but the HD version is worth the extra dough at $2.59.