The Sacrifice

The Sacrifice is an upcoming three-map DLC for both Left 4 Dead and ''Left 4 Dead 2. ''It is set to be released on October 5th. The DLC is free for PC players, while for Xbox 360 players it will be in two separate packages for Xbox Live (one for Left 4 Dead and one for Left 4 Dead 2), and will cost 560 Microsoft Points for each one.

Released in The Sacrifice

 * The Sacrifice campaign for Left 4 Dead and Left 4 Dead 2.
 * A comic book depicting the events that happened after Blood Harvest as well as Survivor back story.
 * Five new Achievements for each DLC.
 * A port of No Mercy for Left 4 Dead 2.