I was genuinely taken aback by the concept of this game once I discovered it, truly ingenious stuff that just had me keep thinking "Wow, this is so cool". Really the main problem I had with it were some of the aspects surrounding this mechanic however, such as the level design getting sort of repetitive by the end where almost the exact same solution was being applied to multiple puzzles. This combined with the edit mode feeling a bit clunky with having to push blocks around made for a less compelling game, though still good. I also struggled to really connect this to the theme much beyond the idea of both worlds needing to be utilised, though said theme still didn't really feel conveyed too effectively within the game. Even so, there's no doubt that conceptually this is absolutely stunning and that there's so much potential, with some cool puzzles throughout to keep things interesting despite there probably being a few too many of the same sort of puzzle solution. Keep up the good work though, this was awesome.