
As promised, Valve has now released The Sacrifice, a free campaign add-on for both Left 4 Dead and Left 4 Dead 2. The DLC for Left 4 Dead 2 also has a version No Mercy (originally released for Left 4 Dead 1) available for a free download via Steam. Finally the Mac port of Left 4 Dead 2 is now available as well as promised.
To celebrate, both games are now on sale for 66 percent off their normal price on Steam. Left 4 Dead 1 and 2 is just $6.49 each with a four pack available for each game for $20.30. You can also buy both games in a bundle for $10.19.[/p]

Left 4 Dead
Normal price = $19.99
Sale price = $6.79 66% off
Genre: Action
Developer: Valve
Publisher: Valve
Release Date: Nov 17, 2008
Languages: English*, French*, German*, Spanish*, Russian*, Danish, Dutch, Finnish, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Simplified Chinese, Swedish, Traditional Chinese
*languages with full audio support
Metascore (metacritic.com) = 89/100
Developer: Valve
Publisher: Valve
Release Date: Nov 17, 2008
Languages: English*, French*, German*, Spanish*, Russian*, Danish, Dutch, Finnish, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Simplified Chinese, Swedish, Traditional Chinese
*languages with full audio support
Metascore (metacritic.com) = 89/100
Normal price = $19.99
Sale price = $6.79 66% off
enre: Action
Developer: Valve
Publisher: Valve
Release Date: Nov 16, 2009
Languages: Danish, Dutch, English*, Finnish, French*, German*, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian*, Simplified Chinese, Spanish*, Swedish, Traditional Chinese
*languages with full audio support
Metascore (metacritic.com) = 89/100
Developer: Valve
Publisher: Valve
Release Date: Nov 16, 2009
Languages: Danish, Dutch, English*, Finnish, French*, German*, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian*, Simplified Chinese, Spanish*, Swedish, Traditional Chinese
*languages with full audio support
Metascore (metacritic.com) = 89/100
Normal price = $29.99
Sale price = $10.19 66% off
A deal so sexy it hurts. New DLC for both games, L4D2 gets a L4D1 stage as well, Macs now can play the game. That's a metric ass-ton of game support. I thought I got a great deal during the Perils of Summer ($10.20+6.80=$17.00) but this blows even that away. And they're such damn good games too (though I prefer L4D1). Really, you folks need to pick this up. $10.19 for both games with a bunch more content, it's simply absurd to even try to pass this up. You won't regret it.
Edit: Purchasing L4D2 during this sale will grant you 2 new items in Team Fortress 2: Ellis' Hat, and a frying pan. If you already own L4D2, you will 'find' the items during the next few times you play TF2.
Add me on Steam (username = injected11) if you buy either one!
The Sacrifice trailer
The Sacrifice comic