'The Sacrifice' will bring updates to both of Valve's zombie shooters. A new campaign will arrive in the original L4D for all modes, set before the previous DLC 'The Passing' and showing Louis and the gang's journey South. The sequel, meanwhile, will score both the new campaign and the opportunity to play as the original survivors in the L4D campaign 'No Mercy' with all the L4D2 weapons, trinkets and baubles.
The Sacrifice will be free on PC and Mac but cost 560 Microsoft Points ($7) on Xbox 360. Do have a gander at The Sacrifice's grim teaser trailer, if you missed it last week.