So we start with the game model. This format is called an MTL, and to be honest, I have no idea how to work with this format to save my life. But a handy little program called Crafty can open them, revealing an odd wireframe reminiscent of nothing in particular. Why is this important? Well, you can use Crafty to export the file into a format we can actually use. Export it as an OBJ file, and save it where you can find it.