Tell me something, how can a ball with no momentum move, and how can a block dropped at a height not propell a block at rest (level 2) on a board-like surface ballanced in the center?
This game is an embarassment for physics, and an example of how to fail, yet for some reason succeed.
No difficulty curve, on medium and hard it goes from tollerable to WTF!!! in just a few waves. It would be better if more money was given. If you're going to make a game like this, tie the loose ends.