Really lovely game concept! I'm surprised it hasn't been done yet (or maybe it has and I just haven't found it yet ;p). If you plan on making a full version of this game, I'd love to help with level design, or help you find a bunch of people who would be very happy to help you do so. Please reach out if you're interested at all!
Discord: CosmoVibe#7735
Email: bufangliang@gmail.com