Quite simply, the best Flash game I've played.
This is an amazing game. The controls are wonderful, the story is even better, and do NOT get me started on the amazing music.
The gameplay is simple, but unique enough to be intriguing. Also, you are AWESOME for using Z, X, and C, rather than A, S, and D, or X, C, and V, as others might do. The best keys to use with the arrow keys are definitely Z, X, and C.
I'm a little biased when it comes to the story. I freaking LOVE snails, which is quite honestly the reason I first played this game.
And the music. 8-bit music is (generally) awesome. You have taken it about 20 steps further. I REALLY want to download the music and put it on my iPod. I REALLY, REALLY do.
In short, this is an amazing, amazing game, and Newgrounds does not give me enough stars to rate this high enough..