Totally glossed over the "Particules will be created, try to follow them" instruction so my first playthrough was just me making spirograph patterns until I saw the red orb, overshot it, and then couldn't find out how to get inside an orbit - I'm assuming if you overshoot you lose? Once I actually read the controls I managed to get back there in just 2 orbits but only got a B rating.
I like the look of the game and for a second I thought the rewind mechanic had actually been recording my moves but then when I realised what it was doing it made sense. Its a cool movement mechanic you've come up with, nice job.