I was playing Doom on the arcade on my 360 and thought of an idea on how controls could work on the iPhone.
Pretty simple, you have a slider on the right which you can move up and down (it'll revert to neutral), and you can move left and right to turn around. The left controls include weapon select (the dark spheres, zooms when you scroll through them), shoot and move.
Control bars will fade if no touch is detected (after a few seconds) and instantly back when you put your fingers back on.
Photo:
Image:
Pretty simple, you have a slider on the right which you can move up and down (it'll revert to neutral), and you can move left and right to turn around. The left controls include weapon select (the dark spheres, zooms when you scroll through them), shoot and move.
Control bars will fade if no touch is detected (after a few seconds) and instantly back when you put your fingers back on.
Photo:

Image:
