Great game! Took some time to figure out what was actually interactable, such as that door-opener in the first level, so maybe you could add an outline or something like that. Oh, and you should disable the itch.io provided full-screen button in the game settings. It hides the proper full-screen button provided by Unity (that actually expands the game). Also add about 10px to the height resolution to properly display the entire button. Well done!