Fun puzzle game, got through the extra levels too! The controls are a bit awkward as the world switch and interact buttons are side by side and in the harder levels it becomes more of a memory game because I find myself constantly pressing a button and memorizing where all the doors I have to go through are located.
Post jam it would be cool to also have a tie back for why a dark world exists and maybe have a spooky final level to end it off. Awesome work!