This is actually really fun and cool! I do think it could use some polishing, especially with some sort of tutorial or text telling you what your objective was. I admit I was kind of running around aimlessly and confused for a while hehe. But the puzzles are actually really fun! I like how you incorporate rewinding time to get past the trees, rocks, etc. Pretty fun!
I'm glad you made a comment about how to get past the stage with the black box because I don't think I would've been able to figure that out. The ability to combine items wasn't super clear to me, so maybe you could edit the art assets to make it more obvious that you can craft stuff, or maybe add text or something?
Also, the animation of the character was just slightly wonky. It seems like the character faces wherever my mouse is rather than the direction I'm walking in. That's not a huge deal, though!
All in all, this was super cute and I really enjoyed it! I like the music in the background even though it seems like a pretty short loop, and the art is really charming for a simple puzzle game! I think that if you keep working on it it will turn out even better! :) Great job!