Gamemode Logic: Designers can now make a single map that can behave differently depending on the gamemode in which it is being played. These are similar to the tools released for Left 4 Dead, but include many updates and new features. Downloading it will add applications, utilities, and example files that are useful for building L4D2 game add-ons. Once installed, you do not need to run this application, it will always be active.ĭESIGNERS: Besides also downloading the above file you will need to download the Left 4 Dead 2 – Authoring Tools. 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. Look for the entry labeled Left 4 Dead 2 – Add-on Support click and install it. Just go into steam and open up the Tools tab.

PLAYERS: If you are not looking to design but play custom campaigns all you need to do is install the add-on support package.