Left4Dead Teaser

From Valve Developer Community

Image:steam_available.png This Steam Media File is available for download.
Duration: 0:39 | Size: 32.9 MB | Game: Left 4 Dead
Enter steam://run/944 (http://panfrie.zergs.com/redirect.html?steam://run/944) in your address bar to play.
You can also enter steam://store/944 (http://panfrie.zergs.com/redirect.html?steam://store/944) or visit the store (http://storefront.steampowered.com/v2/index.php?area=game&AppId=944) for installation. 		Image:steam_movie.png
Retrieved from "http://developer.valvesoftware.com/wiki/Left4Dead_Teaser"