Definitely a great puzzle game, the rewind mechanic was a little slow but overall I think the puzzles made it fun to use. Everything was introduced to the player in a smart way, so none of the puzzles felt too difficult. The art and music is great, although I did think the environment was a little too dark before getting the puzzle piece. The one thing I didn't really like were the character movements. I didn't like that the character lost all momentum when hitting the ground, I think it's better to give the player more control in the air instead of forcing them to stop immediately after every landing. The character's jump also looked weird, I think squashing and stretching on the landing and pushing off would make it look more natural. Overall very well done!