Great little game! Nice art and audio, with some good twists in the puzzles. Would love to see a few more complex levels but it felt like the right amount of difficulty for a jam :)
Two tiny gripes - I'd have liked the menu buttons to work with the keyboard (quite annoying to have to move back to the mouse just to click 'retry'), and I found it hard to tell when I was going to actually eat my tail vs be one square away.