I've been watching all of the dev videos up to this point, and it's been super rewarding to watch your journey!
Playing the demo now, I can really feel the amount of work and iteration that's gone into it :) The polish and overall execution really make it feel great, from the little nut and bolt particles getting pulled up by the magnet, to the little comments from your magnet friend a la Mario Wonder. The puzzle design is really clean and nice, too!