Funny
It's harder than it looks, until you realise there's no winning.
- There should be a goal, a point where he manages to throw the rock away.
- Instead of simlpy holding down the button, you should have to press it all the time. If you stop pressing for x number of frames, you will lose. It may require harder scripting than this, but it's quite easy once you know how to. I'd say go for a sequal.