Pretty good game. Gameplay is cool and respect the theme. Some suggestions: Your colours are too saturated for me (and I'm really not an expert), Use a colour palette (check https://lospec.com/ for pre-made one or https://paletton.com to compose yours). I think in your case a zoom in/out would be better than moving screen as we want to see all. I like your simple Graphics. Audio is ok. It's fun. Well done.