User:Sera404/Custom Campaigns

Custom Campaigns, or Add-ons, are community-created story lines usually consisting of several chapters, much like the normal campaigns found in Left 4 Dead and Left 4 Dead 2.

Generally, each custom campaign features a "finale", where the Survivors must call for help and face off against the Infected while waiting for rescue to arrive, which generally takes the form of a rescue vehicle, although this is not always the case.

Valve is supportive of custom content created for the Left 4 Dead series, and has even released audio recorded by the voice actors of the Survivors for use in custom campaigns, as well as featuring them on their online blog.