the campaigns for left 4 dead are: NO MERCY BLOOD HARVEST DEAD AIR DEATH TOLL
There are a few sites, check out the Left 4 Dead forums online.
4 players can play in Left 4 Dead 2.
There may be a Left 4 Dead 3. I think they started making it September 2011.
It is a Key that will unlock the Left 4 Dead 2 in your steam library
Team Fortress 2, Gmod, Left 4 Dead 2, Counter Strike, Killing Floor, Dota 2,
You need a source gam like HL, HL2, TF2, or Left 4 Dead. If you have one and it still won't work then you should ask elsewere
L4D uses a diffrent Source engine the Gmod so it dont get local content...sry : ( i hate it too...
No, Left 4 Dead 3 is not coming out. There is only Left 4 Dead and Left 4 Dead 2. Both fun games.
No, left 4 dead will only work for left 4 dead mods.
Yes, Here's some from Garrysmod.org, a trusted site. http://www.garrysmod.org/downloads/?tag=left+4+dead Just to let you know, these DO NOT WORK and CAN NOT using the same or similar method. someone realy needs to find a way already, or Garry should upload a gmod patch to make it compatible for l4d.
left for dead
They (Valve and Havok) haven't announced a left 4 Dead 4, but they have announced a Left 4 Dead 3 coming out in 2011.
Not Left 4 Dead 1 or 2, but Valve and Havok announced the Haggard in Left 4 Dead 3.
You can't get The Passing on Left 4 Dead 1. It is only a DLC for Left 4 Dead 2.
Left 4 Dead is quite a good game if you like shooting zombies in an online mmo style. But, if you already have left 4 dead, you should get left 4 dead 2.
If you love zombie games then you'll love Left 4 dead, they also came out with Left 4 Dead 2.