Some might already know it, others might not, and it's for those I make this topic, as I didn't knew it myself either 2 days ago. It's possible to add a server browser in L4D, like we know it in CSS, Garry's Mod, TF2 etc. All you need to do is add -serverbrowser to L4D's launch options. For the ones that don't know how to get to the launch options (): - Right click on Left 4 Dead in your Steam games list and select 'Properties' - Go to 'Set launch options...' in the Properties menu under the 'General' tab: - Add the -serverbrowser option in the launch options line: - You now have a server browser option in the game menu! As far as I know and tested, this doesn't work for L4D2 (yet).