Saw this on
RPS:
TrenchBroom! A new Quake map editor! Instead of the old style map editors where you stare at two windows showing 2D views, this editor is one big 3D window that you do all your editing in. Fun. I'm going to download it and try it out!
This also reminded me of
Doom Builder, which lets you edit Doom maps with a 3D view. Its like we're in the future of the past!
