There have been a few games this game jam that have gone for a similar mechanic and game, but of the 3 that I have played, this one is by far the best one. It is more polished, its visual identity stands out much more, and it's more fleshed out with a boss fight too. Really nice job on this! The only small thing I would ask for is a bit more responsiveness when I jump, and just a little more speed maybe. Otherwise really great job!