Okay, this isn't a game as such, but it's still one of the coolest iPhone apps to make it to the App Store for launch.
It's called PhoneSaber, and it does one simple thing - turns your iPhone into a Star Wars lightsaber.
By which I mean it displays a glowing lightsaber on-screen, and as you swing your iPhone around, it emits proper lightsabery noises, before letting you put it away.
Oh, and you can change the colour to suit your preferences. A small detail, but crucial.
PhoneSaber is a free download, so there's really no excuse not to stick it on your iPhone as soon as the 2.0 firmware comes out later on. Geektastic.
Check its product page on iTunes out here.