Best puzzler i've played for a while...
...but there's room for improvement.
On the plus side. It's a good concept and it was well executed. The script held no flaws, as far as I tell. It's difficult enough without being too frustrating. The music was awesome and fits the game perfectly. The strobe effect for impossible mode was a good move.
Definately a good way to kill 20/30 minutes.
The negatives- Levels 61-80 were by far the hardest, it steadily got easier after that. Impossible mode wasn't hard enough to give you that sense of satisfaction when you beat the game. The music cuts out on levels 20,40,60,80,100 & 120. I don'tknow how well it would work but more in game features (switches, moving blocks etc) might help keep interest.
I don't even like puzzle games but this was awesome. I look forward to a sequal or something.