Left 4 Dead 2 Authoring Tools and Left 4 Dead 2 Add-on Support released Valve has released the Left 4 Dead 2 Authoring Tools and Left 4 Dead 2 Add-on support as a Christmas present to the L4D 2 ...

Fans have had a field day with exploring what's possible in Valve's Left 4 Dead since the demo for the PC version was unlocked for pre-order customers yesterday. After less than 48 hours, a bit of ...