On October 5th, Valve will release a new campaign for both Left 4 Dead 1 and Left 4 Dead 2 called The Sacrifice, a story which bridges the gap between the two games, and explains the mysterious events of previous downloadable campaign The Passing. As a special treat for Left 4 Dead 2 owners, they’ve also carried the original game’s No Mercy campaign across to Left 4 Dead 2. And everyone will get a huge 190 page comic beforehand, leading up to the events of The Sacrifice.
