I couldn't get past the platform with the spikes... Is it because it's unfinished?
Anyways, the feeling is really interesting. A bit nauseating at first and the spinning circle doesn't help with that, but I like it. You nailed it with that (if you were going for that feeling). But I have to say though that the rewind is a bit of a stretch. It has nothing to do with the gameplay (or at least, I didn't find a way to get to a place where it has), and it is just a small screen. Almost all platforms have a restart button. So maybe, if you have time, try to add a connection between the rewind screen and the gameplay itself.
Oh and also, the text at the start of the game is a bit hard to read because of the colours in the background. Maybe you could put a transparent white rectangle over it?