Hmm, I just finished it, and it feels somewhat anticlimactic... I was hoping for a boss level (not just a hard puzzle, but a new mechanic) and without too many spoilers, it would have been nice for testing on the rats not to have finished...
You know those spinner things where you stare at them for 30 seconds then look at the back of your hand and it gets distorted? That happens if you try to get the high score for total stars collected: The way the stars accelerate as they fall makes your eyes feel really wierd :S
Great game though :>