"The Sacrifice" Teaser

This DLC for Left 4 Dead, released in 2010, adds the complete "The Sacrifice" campaign, playable across Campaign, Versus, and Survival modes, featuring a new finale style. It serves as a prequel detailing the Survivors' southward journey, allowing players to experience the events leading to a pivotal character's fate. For owners of the sequel, this content also unlocks "The Sacrifice" and "No Mercy" campaigns using the L4D2 Survivors, integrating the sequel's Special Infected, weapons, and Scavenge mode into the older maps.