I love the game, I had a lot of fun playing :) It felt a bit weird being able to push my old selves around (on accident) and that sometimes caused me to have to redo the level, and it would've been nice to have an indication on how many rewinds you're expecting someone to use in order to reward them 3 stars. Also, when I became a box ontop of a button and rewinded, the box didn't keep the button pushed down.
I liked the music and sound effects and the UI between levels felt super polished. Really cool you made this in such a short period of time!