The piston sounds and drop sounds were next on my list, but I was running out of time so I just left them silent. That'll be the last thing I add... maybe when the jam is done. And I had an animation on the nut as it moved, but it's such a minimal game that it was hard to not make it too much, so I just added the jump animation and left it at that. There is an idle: if you stand still long enough it blinks. :)