Very early Left 4 Dead/Terror-Strike footage

Found this on a Discord server and knew I had to archive it. This is an extremely early gameplay video of Left 4 Dead back when it was a mod for Counter-Strike: Source. The map in this footage appears to be an expanded version of the leaked Counter-Strike: Source map zombie_city, which contains elements that eventually appeared in Left 4 Dead’s The Apartments chapter in No Mercy. Similar gameplay footage has been online before, but the video was deleted. You can watch footage of gameplay in zombie_city over at for comparison.