Liked the puzzles, got stuck later but likely I am missing something in that room. I figured out some of the earlier ones but not the one later where you went to one with two bars up to one with no box to move, not sure how you get something up there to make it trigger the switch. Might have missed something earlier. The undo was a clever feature to make it so you didn't get totally stuck and had to start all over. Though there was a bug where it was undoing my movement into another room and I couldn't see myself until I pressed a movement button. It was the same room I got stuck in. LOL