I wan't to start modding SCP: containment breach, and to start, I want to make custom rooms with 3D World Studio. Problem is that I CAN'T find a download to it, all sites are sketch af, and others, just don't work at all. If anyone has a free copy or any other way of getting it, that would be a tremendous thank you on my part.

The only way to get it is by buying it. However, if you want to make a custom layout for the game you can use the map creator inside SCPCB's files. You can also edit rooms' code by regular or ++ version of Notepad.

It's fine now, Vane brain was nice enough to give a free copy, but thanks for replying.