It is only for Xbox.
nope
No.
yes
Never
4 players can play in Left 4 Dead 2.
Unfortunately no, it is only on Xbox 360 and PC.
No, but you can play PlayStation games on a PlayStation 2.
Yes a person can play playstation games on a playstation 2 .i have a playstation 2 and i can play ps 1 games on it.
Yes, you can play left 4 dead 2 on steam if you buy from Gamestop.
NO, Left 4 Dead is not for the PlayStation 2. It is only currently on the PC and Xbox 360. Valve has not announced another console release.
If it didn't play PlayStation 2 games, it wouldn't be a PlayStation 2 emulator. So obviously the answer is no.
no
You have to download Steam on your computer, then Left 4 Dead 2 can be bought from that.
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)