So much Left 4 Dead related shit right now! Firstly, the final part of The Sacrifice comic is out, and you can read it right here. Second, linked to that, The Sacrifice DLC is available today, and if you own either Left 4 Dead or L4D2, you can download it through Steam for free! Thirdly, Left 4 Dead 2 is now available on the Mac, and Valve have promised OSX support for the original L4D before Halloween arrives. And finally, to celebrate all of this, Valve have SLASHED (with a katana) the price of both games in one of their ridiculous sales – pick up either game for about a fiver, or get both for just under 8 quid. Rock on.