It's a 3D graphical renderer and physics engine made with HTML canvas and JS. I didn't use any packages or anything. Honestly I made it ages ago and cannot remember how it works at all. All I remember is that it took forever to build.
arrow keys to move,
space to jump,
scroll to zoom,
drag to rotate.
All of the blocks are generated randomly.
This is really cool, and I love it a lot, do you mind if I fork it and pull it apart, I notice an issue that when two objects take up some of the same space, it doesn't quite know what to do with them and plots one over the other almost at random (i'd like to see if I can get it to render correctly)