Loved it! Great job easing new players into the game's mechanics in the first few levels and then slowly increasing the challenge. I found the aesthetics really cool also. The game would be perfectly ok without them, but committing to a certain look and feel like that definitely bumped it up a notch and made it even more interesting.
Solid, easy to understand concept - easy to just pick up and play. If you repackage this for mobile I could totally see myself sinking hours into this game trying to solve increasingly harder levels when I'm just waiting around for something. One suggestion: if you can think of a good way to do it, make the snake itself indicate how far from the target length it is, so that you don't have to look down to get that info.
