I like the idea, and the magnetics mechanic really allows room for interesting puzzles, but I feel like the controls could be improved a little bit (maybe using WASD instead of clicking and scrolling) for the movement. I also only understood I didn't need to be close to the grey items to change their polarity after staying for a while on the first level, but it could easily be a me problem, tbh. Overall, I think it could easily be improved and expanded upon for a bigger game. Good work.