Valve announced today that the authoring tools for Left 4 Dead 2 are now available. If you're looking to design your own custom campaign, now you can! Go into Steam, open up the Tools tab, and install the Left 4 Dead 2 Add-on Support. "This download is sizable, but will update your L4D2 installation to allow running ANY map, including custom maps made for the original Left 4 Dead," writes Valve on the L4D blog.
Everyone's going to benefit from this, whether you're a designer or not. We're about to get a whole lot more L4D2 content.
For more info on the authoring tools, check out the blog post on it.
