The Main Menu is really Well Designed.
Ambient Sound is nice to listen through out the Game. Not Annoying and not Painful in the Ears.
The Mouse Sensitivity is Incredible High. with 3200 dpi not playable but with 400 dpi :p
I like the Puzzle System and Dark Ambient. I Think there's more Potential to this Game
Theme is fine, The Way out is hidden and not Clear at the Start.
Personally i would like to see different colored Cubes to give it more puzzle Feeling that you have to place them more Strategic or something.
Had a good Time playing it. Good work.