I really enjoyed this one! I wish it were a little bit longer, but the mechanics work super well. If you ever wanted to take it further you could add special tiles that do things like flip your direction, or disappear when you reverse gravity (just some ideas that you can feel free to ignore). Honestly the two biggest things I'd recommend would have been including some sound, and adding a thumbnail and description to your entry. It's really well done, and polished, so if you advertise it a bit more, I'm sure you'll get more plays on it. Great work!