Great
This game i feel is a true gem. I have never really played a game quite like this. I completed the game (100%) and i am sorely tempted to just start over and play again, which is very rare for me. The game for some reason appears to have a bit of an "arcade" feel, probably due to the pixel graphics and the Z/X buttons. Also, unlike some other games, I didn't feel tempted to turn the music off. If anything I would probably turn it on if I did.
I love they way the game employs the snails ability to stick to walls, and the various 'power up' item system you have going. I would say the only real thing you need to work on here may be the (very) fine tuning of the "gravity snail" power up.
Sure collecting all the helix fragments was a bit of a pain, having to search the whole map 3 times, but i loved every second of it, and wouldn't have it any other way.