There should be a shmup but reversed...You play as a giant disembodied hand that's jutting out from the sky with god-rays galore. And your attacks include swatting the shit out of anything, or dragging your index finger across the land destroying anything in its path. Or, or. Special attacks where you turn your hand into a gun gesture and shoot a giant laser.
The enemy tries to do anything they can do destroy said "god-hand" but can't. And your goal is to rack up as many points as possible in a set amount of time.