Here's a Pico-8 ray tracer with the amazing ability to render both spheres AND planes.
Let it run all the way through even though the colors will be funky at first. After it renders the image, it will switch to high-color mode.
Features:
-NEW High Color Mode
-Spheres
-Planes
-Textures (2d)
-Diffuse and Specular Shading
-Shadows
-Reflections
-ElectricGryphon