Okay, this is a great game, and not only because it was for a game jam, but it actually has what a great game needs. It creatively played with the theme "rewind", has retro graphics (bonus nostalgia points) and a beautiful soundtrack. My only complaint is that I had to suffer through THAT mushroom jump in level five only to get a bad ending - the world got destroyed. :( However, I enjoyed the humorous approach. 5/5 if had a different ending. :)
I don't know why I haven't rated this before.
It's very good. I like it.