A good game concept that I think would have done a bit better as a puzzle game than as... I guess a precision platformer? My favorite parts were definitely the moments I had to think about what box goes where and less about not touching the walls. The parts with the triangles were really cool because I hadn't thought about how that shape might work, so maybe adding more kinds of shapes and making it so each shape has a particular goal it needs to get to would nudge this game more in the direction it feels like it wants to go. Nevertheless, this has got the bones of a great puzzle game - nice work! The evolving music was a great bonus too 🎵