The pixel art is really neat, and the game play is interesting! And the idea allows to extend the game so much! The only issue I have is that I'm used to using 'W' instead of SPACE and kept falling down a lot initially, but it did get better. Here's my game. Do let me know what you think of it. :)
Really liked your game. One thing i hated while playing is this collision problem, where your momentum get reset when hit edges of platforms. Here is my game: https://keprgoll.itch.io/it-is-dangerous-to-rewind
