Just for those that hadn’t seen: over the weekend, Valve released its official SDK/authoring tools to “create your own campaign maps, character skins, 3D models, sound effects, and music” for ever-green fave Left 4 Dead, which I mention here because if someone could make us the perfect 70s suburban shopping mall, I would be eternally indebted.

Authoring Tools/SDK (Left 4 Dead) [Valve, via shacknews