Gaming
The update will feature a campaign called 'Cold Stream', which is currently being worked on by community member Matthew Lourdelet. Valve has also invited the rest of the community to contribute towards finishing it.
In addition, the three remaining campaigns from the first Left 4 Dead game will be included.
The official Left 4 Dead blog read: "'Cold Stream' looks even more promising with innovative gameplay arenas and effects. Matthew has really shown that there are still plenty of new ideas in L4D2 modding."
No release date has been set, though the blog mentioned that it would be "sometime after Portal 2" and that it would be released on the Xbox 360, PC and Mac.
Related Stories
Level Up
Retro Corner: 'Diablo'We revisit the game that started the dungeon crawler sub-genre, Diablo.
Gaming Reviews
'Ghost Recon: Future Soldier' reviewFuture Soldier amps up the action set pieces in an epic, globe-spanning story.
Gaming Features
Kickstarter: The future of games funding?We investigate the growing trend of 'crowd-source' funding for games projects.
Gaming Interviews
DiRT Showdown interview with CodemastersWe talk to Codemasters about the rowdy, supercharged son of the DiRT franchise.
