Thanks! Yup, it’s 100% on the CPU and all written from scratch in JavaScript. Just loaded up Quake E1M1 in the demo today, the framerate is crap right now due to not having implemented any scene management, occlusion culling or any sort of fancy stuff whatsoever, but it’s still somewhat a progress that the engine can handle (i.e., doesn’t actually shit itself lol) 6k+ polygons that I throw at it.