Really cool game! Ilike the concept and the physics, and the art a lot! :D
I was happy how my weird towers managed to make it lol
I liked the weight effect of the bigger cups later on, and the cool stuff going on in the background (especially the Godzilla :D )
I did not like how powerful the hand sway got tho: it made it hard to even pick up a cup! I understand you probably added it for the hilarity of the tower/to make it more challenging. However, it would have been nice if yo could just click to place a cup and not have to pick a cup up.
To make it more challenging, maybe you could have added some creatures that would take cups away unless you trapped them in a cup instead of the hand sway?