I got to day 16 and then stopped there. I feel like the concept is great and the idea of your own past attempts being the obstacles is really cool. However, I think because the game is endless, it puts a bit of a limit on that idea. I think with proper levels and design, this could be an incredibly intuitive game. Good work, and also as a side note, I like the maps color changing as you pick up more of the "crystal" things, very nice attention to detail.