As part of our ongoing marketing campaign, we're airing a pair of commercials on network and cable television, including ABC, FOX, Spike, ESPN, MTV, Comedy Central, CBC and more. Created with footage from Left 4 Dead's opening sequence, the commercial goes live on television November 8th. But you can watch it online now!

Want to win a free copy of Left 4 Dead? How about a new gaming PC? All it takes is a snapshot of you in front of a Left 4 Dead billboard, bus, Jumbotron or other piece of outdoor advertising. So fire up your Leica and get over to the official contest page.

Hot off of solving the global credit crisis, world leaders have turned to more important matters. They have declared this Sunday October 26th, World Zombie Day. What better way to celebrate World Zombie Day than dress up like a zombie and shamble around?

The guys over at Left4Dead411.com just launched a new contest today with the grand prize being four copies of Left 4 Dead. The contest is all about getting your picture taken in front of a horde of zombies.

Where can you find a horde before November 18th? Left4Dead411 has plenty of tips. Just please remember to respect the native zombies, they get hungry for brains if you anger them.

Left 4 Dead is now available for pre-purchase worldwide via Steam! As with our pre-purchase promotions for retail PC and Xbox 360, customers who pre-purchase Left 4 Dead via Steam will save 10% off the regular price. Left 4 Dead will be released at retail on PC and Xbox 360 on November 18 in North America and November 21 in Europe. The worldwide Steam release will be November 18.

In Germany, lucky members of the press were able to play co-op with Gabe Newell at the Leipzig Games Convention, while Torsten Zabka manned the L4D tour bus outside.

This weekend, expert Lego Builders from all over the world will convene in the Seattle Center Exhibition Hall for BrickCon 2008.

Since we announced Left 4 Dead in late 2006, the growing online community has been a great source of feedback and support during the development process. We're planning on using this blog to talk more directly with that community - through stories, artwork, and insights into our design and development process.