Installing and playing custom Left 4 Dead maps is very easy and can be completed in minutes.

1. Download the archive.
   Installation paths may differ based on your system configuration.
   • Place the .vpk file into your L4D addons folder
     C:\Program Files (x86)\Steam\steamapps\common\left 4 dead\left4dead\addons\

2. Load your map / campaign from the L4D Add-ons menu and play!

How to Play Custom Maps in Multiplayer (.VPK)

1. The host creator must download and install the .VPK file.
   Installation paths may differ based on your system configuration.
2. Create a lobby as a 'Add-on Campaign / Map' and start the game!
   Read more on: : i3D.net Game Forums
3. Your friends can now join your game and the maps will automatically download!