Nice, really dope idea! Probably most of the things I can recommend are already obvious (more levels, different puzzle/platformer mechanics (switches, mobs, moving platforms, etc.)) But otherwise the game is pretty cool. Maybe one not so obvious thing I can recommend is "connecting" some of the objects to the window position so that some objects move with the window when you drag it.
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Yes!! I want to add all those things cause they sound like so much fun. However, as you can imagine, this game was pretty hard to code just by how it's built lmao. We also didn't want to pressure ourselves too much and focused mostly on experimenting with just this core mechanic in mind. If we had more time, those would absolutely be next on the list :) Thank you so much for the feedback!!