Accelerometer based 3d world: Buckethead's adventure

Here is the premise: you have a bucket over your head, placed there for your protection by hamhanded but well meaning unicorns. Now you must go on a quest to save the redheaded fairy princess. Your sidekick Opal (also a fairy) has managed to kung-fu a little hole in the bucket for you to see through with one eye. Not called a sidekick for nothing, that Opal.

That one-eyed view thru the hole is what you see on your device. As you swing it about, you can see thru the hole as though you were swinging about your head, like you do. As you walk with the ipad the view through your buckethole moves along as if you were walking. You can look down at your feet, above you (Opal is usually up there) - wherever you swing the pad. It is the determination of the field of view that is new here. Interaction with things is via tapping on the pad as usual.

It might be possible to use GPS as an aspect of this game - logging the current GPS coordinates at game on and then tracking real life movement, mapping that to movement in the game. You might need to wander around some. If you get up against a wall you might need to pause and restart once you get outside or someplace with more space.