It looks like a pretty cool mechanic but I couldn't really figure out how to use the magnet properly, it also felt pretty slow for a speedrunning game. There was also a bug that sometimes sent you back to a previous magnet position. I would've liked to have a fullscreen button so everything's a little easier to see.
The art and sound were pretty good though, I think it could be a pretty good speedrunning game with some adjustments to the mechanics. Good job!