Right off the bat, I'm seeing the placeholder text on your youtube buttons is still there. You have a NaN label showing up over every level in the select screen. The timer in each level is not animating correctly for me either. The gameplay is smooth and the controls feel great, other than sliding. I would map sliding to something more natural, like LShift. While rewinding is part of the game, it doesn't feel mandatory. Rewinding just takes me back to the start.