So I like how you turned snake into more of a puzzle game instead of a scoring game, gives it a nice twist, and on top of that, level design wise, it's well executed. The art is simple yet good, and that's pretty awesome for a 48 hour jam. Now my only problem has to do with the core gameplay, controlling the snake didnt feel responsive to me, I didn't feel in control, this probably has to do with how smooth the animation is combined with the fact that everything is actually based on a grid, so when you move, there will be a delay related to where you are on that grid. I really don't know how this could be improved because of that... But yeah, other than that it's a solid concept :)
Edit: Oh yeah, really liked the crates too! It's where it became a puzzle game for me and I was like ooooh!!