Went through first couple levels not knowing why I need the rewind ability until the level with blue button. I guess the reason for the rewind ability was introduced early is to ensure the game won't be a regular platformer game. The last few levels are really interesting and well challenging.
The difficulty curve in games is really well done and the jumping movement in this game is really nice for both tight and open spaces. But there are few designs that I think they need some changes. I could miss the dialog if it's appearing during the player in motion or in a rush event and I think there are many other appropriate place and time for the dialog to show up. One more issue for me was that I mistaken the collider with the background in the last level. I though I needed to jump on the fast moving platform but I hit the ceiling. There may be only one area that I had trouble seeing but try not to mislead the player with the similar looking elements that have completely different purposes.