This is really good. Perfect game design. If this were a world in a full game, you would have executed it flawlessly. You introduce each mechanic one by one and put a challenge at the end using what we've learned. This is really great work, especially in the creativity department. I don't think you could find many other games like this.
Only thing i'd improve on is the style. I absolutely understand that it's supposed to look bad, weird, and unnerving (my game does that too) but I feel like it goes a slight bit too far with it. I wish the UI was a bit more organized and I feel like the music should be better. Like you can acknowledge that your music is purposefully bad but that doesn't make it not bad. I feel like there's a balance you can do with bad music but not bad you're supposed to turn it off. I like the option to toggle the music though.
But those are just minor nitpicks that only I feel. They really don't detract from the game much. Very great job!!