Press WASD and move your mouse around! Press Q to show some interesting stuff, and allow you to change some options. This is unfinished but it's getting harder and harder to make more stuff, so it'll probably stay that way (at least for a while).
Everything is mine, but I was inspired to do this by @Griffpatch and his raytracing spheres, and also someone I found on Youtube called The Coding Train who did a similar thing in Javascript. Use this link to run the game faster, doubles my FPS most of the time (10-20 fps -> 30+ fps) https://turbowarp.org/#419386247