I just got into PICO-8 last weekend. This is my first game purchased. I'm so utterly impressed. I was a 3D guy on the Amiga in the 80's and it became my profession. In the 90's I loved Virtua Racing.
Excellent work on this!!!
I realize you are dithering to compensate for lack of colors, but is it possible to have solid fill by pressing up and down together to toggle dither vs solid (of course we'd lose the shading).
Outstanding. Seriously!