Very cute art i love the snails. However, as kiprokoala stated, the keys move the screen as well. I was a little confused on what to do in the game, so maybe a "How To Play" section is in order! Very interesting idea though i really wish i could play it more 

I have problems playing it, at the begining it doesn't detect the keys, later the page start scrolling when i move.

I couldn't play this game properly because of moving web page when playing... But you had a good idea, different from everyone idea.

The character is very slow compared to some enemies, perhaps a bit of balance tweaking is in order :) Very cute art though, a volume slider for the music would be nice too!