You play as a hammer, and you move it around to get it through a moving jumble of objects trying to protect a crystal or something that you are trying to break. The crystal moves around, with its guards moving with it.
I intend to have multiple enemy types: Most defensively protecting the crystal that you "can't touch", but also one or two offensive ones trying to kill you. Also, possibly level terrain.
First up: Drawing a good hammer.
Just finished drawing the hammer, which you can see here:
Searched Google Images until I found one I liked, then drew over it and remade it.