Very beautiful! The art is way over the top for a game jam, and the atmospheric music and sounds are great too! Hade a lot of fun, and was very impressed by the character designs (the snail, loved it!), the fact that I had already read about it at a signpost before I actually faced it made it even cooler, it clearly lived up to my expectations ^^
Now, I will admit not seeing this through to the end, and what got me was the double jump. While my life felt wonderful for a while after I got the double jump I soon got frustrated by how inconsistent it was. I was never sure where I could actually go with it or not, especially that part where you have to jump from climbing.
Sure needs a good amount of polish to feel like a complete game, but to think you made it in less than 72 hours? Well, that simly amazing!