A pretty cool concept! It has its rough spots, though. The rewind mechanic is a good idea, but here it feels like it takes a long time for it to take effect. Like, the level will load, i'll look around to see what's up, and by the time I'm ready to rewind I just hold the button for a really long time until the rewind kicks in. If you could find a solution to that problem, you'd have a real cool game on your hands!