...I tried to render everything with OpenGL and as expected, found myself in the middle of a multitude of problems relating to it. The blocks look a lot cooler in 3d though, so I hope I'll manage to resume studying what went wrong and eventually fix it. If I had a Windows machine to do development on, I might try to rewrite everything in Unity, but until they make a Linux dev platform, I think I'll remain with pygame and pyOpenGL.