Authors: Plebs, NightWolf, Dr.Boo, Calleberg, Allison E. Janssen, BranZyme, Richy221
Bio 4 Dead (the developer — Plebs; the version — 1.1)
Zombie Warfare (the developer — NightWolf; the version — 1.0)
Ultra-Massacre! (the developer — Dr.Boo; the version — 2.1)
Sleep with the fishes (the developer — Calleberg; the version — 1.2)
And Your Little Dog, Too! (the developer — Allison E. Janssen; the version — 1.1)
Cold Storage (the developer — BranZyme; the version — 1.1)
Aquarius (the developer — Richy221; the version — 2.0 beta)
Place the vpk-file from the folder with the name of a map necessary to you in the directory Steam/SteamApps/common/left 4 dead 2/left4dead2/addons.
At you the utility of Left 4 Dead 2 Add-on Support from Valve shall be set. That to download it, it is necessary to enter Steam, to select the tab of Tools (Tools), to right-click on the name of this program, to select the Install Game item (To set game) and to follow instructions (after the end of loading of files of any additional actions it isn't required).