Please be more specific. What password? There is no password for installation, assuming you bought the game yourself. If you had the game gifted, there is no password either. If you bought the game in stores, the "serial number" (not password) for installation and registration on Steam should be somewhere on the box. Other than that, please specify WHICH password you want.
On the back of the game manual/CD case, or on your Steam account.
4 players can play in Left 4 Dead 2.
It is a Key that will unlock the Left 4 Dead 2 in your steam library
Yes there is split screen for left 4 dead 2.
You can purchase The Sacrifice DLC for Left 4 Dead 2, which has you play as characters from the first game. Additionally, you can put character skins of the original characters onto the characters of Left 4 Dead 2 (Only in the PC version)
On the back of the game manual/CD case, or on your Steam account.
no, left 4 dead 3 would not have the same characters as in 1 or 2
left 4 dead 2 can be downloaded from Steam
No, Left 4 Dead 3 is not coming out. There is only Left 4 Dead and Left 4 Dead 2. Both fun games.
4 players can play in Left 4 Dead 2.
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.
Yes it does.
Left 4 Dead 2!!
It is a Key that will unlock the Left 4 Dead 2 in your steam library
If you love zombie games then you'll love Left 4 dead, they also came out with Left 4 Dead 2.
Steam's Left 4 Dead and Left 4 Dead 2 engines have eliminated bunny hopping.