Modder Matthew Lourdelet, known among 'L4D' fans for his work on the '2 Evil Eyes' campaign map, has been working on a new one called 'Cold Stream.' Valve gave 'Cold Stream' a look and decided that it would go well with a planned DLC release of the original game's remaining campaigns.
Valve offered a few details about the upcoming DLC on its Left 4 Dead Blog. Also in the pack is a brand new campaign called 'Cold Stream,' which was actually created by the 'Left 4 Dead' fan community. 'No Mercy' was already released as part of the last DLC pack, 'The Sacrifice,' and now the remaining three will be coming in the next pack. 'Left 4 Dead 2' may have featured four brand-new characters and all new environments, but fans still have a fondness for the original campaign chapters.