Helm's Deep map added to Left 4 Dead 2 servers

The Lord of the Rings and Left 4 Dead franchises have come together in an official way. Valve announced this week that the popular user-created Helm's Deep Reborn map has been added to the official Left 4 Dead 2 servers.

Players can visit the mod's workshop page and click "subscribe" to download and install the campaign.

Helm's Deep Reborn puts players into the boots of defenders of Rohan fortress Helm's Deep from Lord of the Rings: The Two Towers. Hordes of undead attack players, and they must push the zombies back to defend the stronghold until Gandalf's arrival.

Valve also announced it is continuing to work on the Extended Mutation System in the Left 4 Dead 2 beta, allowing modders to tinker with new gameplay ideas. An example provided was a mod that allows gamers to play Left 4 Dead 1 inside of Left 4 Dead 2. Valve said it is working with content creators to add new features before the tool is released in full.