This is construct from The Matrix.
For a long time I have wanted to see a "Construct" map for gmod. But there are none, I am aware of the white room in gm_construct, but it has uneven lighting and props cast shadows. This is my first released source map. It is very simple, I know. But I haven't seen anything like it out there, so I'm releasing it anyways. I did contemplate adding functionality for summoning the dojo and the skyscrapers and the infinite weapon rack and such... but then I was struck by a huge surge of laziness... I mean I didn't want to break the simple concept of "This is construct, spawn anything you like." So build your own dojo, use the PHX skyscraper, spawn silly masses of weapons! :P
Facepunch thread: http://forums.facepunchstudios.com/showthread.php?t=593530