Love me some incrementals!
After a few stages I had pretty much endless money and upgraded everything a bunch.
The next stage a huge group of enemies spawned and got killed automatically, creating huge lag. Then I entered the final stage and watched some crazy zoomed out color action.
This may sound like a negative but it isn't. It was fun breaking the game and the theming was cool.
Cool game!
My main gripe would be the use of limitation, or the lack of it.