Left 4 Dead 2: Cold Stream

This DLC is a custom campaign developed by Matthew Lourdelet, the developer of 2 Evil Eyes and eventually made official by Valve. This DLC features the rest of the original campaigns from Left 4 Dead, Death Toll, Dead Air, Blood Harvest, as well as the later addition of Crash Course. They were ported over to Left 4 Dead 2 in a similar fashion with No Mercy when The Sacrifice was released, featuring the Left 4 Dead Survivors.

Released 24 July 2012 for PC (Microsoft Windows) and Xbox 360. Rated M by ESRB.

Left 4 Dead 2: Cold Stream screenshots