Don't Shoot Yourself is a self-directed survival shooter coming to iOS from Silverware Games. Each level is a confined space, and your bullets will ricochet around (and fire) constantly, meaning that it only gets harder the longer you hold out. But the longer you last, the closer you get to your final bullet, and once that's fired you'll break out of the stage and be able to move on to the next.
I dunno about you, but I'm interested in trying my hand at the Boss challenges, 50 levels, and Infinite Mode when Don't Shoot Yourself! hits the App Store on November 13.