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Valve's Steam platform has received a patch for Left 4 Dead which will be automatically applied the next time players start the game.

The specific changes include;

  • Client: Removed an infinite ammo exploit for molotovs

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

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

Thanks steampowered.com.