It's been a long time since I found this kind of maze game that was both good AND challenging. I don't see why I should write a long review about this because all there is to say is: pro work, awesome game. (I never knew a soap bubble could be so cool to play with ;))
One small thing: I died (err...exploded?) in the level where you're in the tank with liquid in it, and where you got to go past a ventilator. When I tried to go back to the level with the code, it said that it was invalid. I rechecked it by playing the game through to that point again, and the code matched the one I tried to use. I also gave up the game there because I just can't get past that level! ^^
For the rest, I really hope you'll make soap bubble III.
Yo mat, I understand what you going through. I made it there also with the underwater fan yea the code doesnt work