Heya, it took me longer than I wanted but I finally got to dive into this! I really enjoyed the box mechanic and you introduced it well, the first level with doors in particular gave me one of those satisfying small Aha Moments :)
The two things I'd request/suggest would be Switch Pro Controller support, and some combination of alternate/custom palettes or a higher contrast mode to help make the interactive items a little more visually distinct from ambient background elements.
Well done overall, looking forward to watching this as it grows!