Valve has released an update for Left 4 Dead which allows users to download and play custom campaigns.



Last month, the SDK mod tools were released, but with this new update, modders can package their maps into a single .vpk file, which users can install with a straightforward double-click.

Users can manage their add-ons and campaigns from within the game. Valve has also added matchmaking, leaderboards and auto-update/download support for custom maps.

Left 4 Dead Authoring Tools

	Fixed missing fgd error
	Added vpk.exe command line tool for extracting, creating, and appending .VPK files
	Removed info_versus (not used)
	Added info_gamemode which fires outputs for Coop, Versus or Survival depending on what game mode the map is loaded in
	Updated tutorial_standards example map, repackaged as 'Dead Line' campaign example add-on
	Sample content now includes source files for official maps

Add-on Campaign Support

	Players download third party campaigns as single .VPK file
	Players can manage and select add-on maps and campaigns via game UI
	Added matchmaking support and download/update prompt for add-on campaigns
	Custom campaign support in Leader boards
	If not already registered, left4dead.exe registers .VPK extension to allow automatic install of add-ons
	Servers and the steam API have been extended to allow servers to send up a list of keys for matchmaking up to 1200 bytes in size

Client

	Removed an infinite ammo exploit for molotovs
	The team swapping issue in Versus has been fixed

The updates will be applied automatically when your Steam client is restarted.


[Thanks to clanbase.ggl.com ]