BloXoR is a tilt game with a puzzle element added to it. The goal is to tilt the device and line up the 3 blocks in sequence O-X-O. You’ll notice that all 3 blocks move when you tilt it so you can see where the puzzle aspect comes in.
The further you get the harder it becomes. You’ll see them start mixing up the stage, throwing in ‘blank blocks’, and doing anything they can to make you use your head to complete the level.
At the beginning of each level you’re asked to center the iPhone or iPod Touch(to calibrate the accelerometer). This can be annoying but I understand why they do it. . .though, I think this should be set once(when you first open the application), rather than each time. Then you can give the user the option to manually recalibrate if they want.