Fast Mapper actively captures a 2D image of your room, except it looks very much 3D. It relies on your camera's static (which, in most cameras, is abundant. It's possible that if your camera is too good, it can only capture you) RUN ON TURBOWARP TO GO FROM 300 CLONES TO 10 THOUSAND! https://turbowarp.org/1387596267/fullscreen?hqpen&clones=Infinity&stuck&fps=60 Do not use Turbo Mode. It breaks it. - How it works! - Fast Mapper creates 300 clones (or 2k on turbowarp) to efficiently propagate around the scene. To run faster, the clones follow movement, which means that when you move your arm, any clones that are on your arm will move with it. Thanks to the tiny static in cameras and some flaws in Scratch's motion detector, we can simulate a detailed photo with non-accurate colors.