The Passing torrent

The first game add-on for Left 4 Dead 2 brings the original Left 4 Dead Survivors down south for a meeting with the L4D2 cast, while delivering new single-player, multiplayer and co-operative gameplay.

"The Passing" features 3 new maps, new weekly game modes (Mutations), a new "uncommon common" zombie class (the fallen survivor), melee weapon (golf club), firearm (M-60), support for infected bot play in Versus, 10 new achievements and more!

patch by CSmania (2011-2012) no-Steam.