Its both Singleplayer and multiplayer
No, Left 4 Dead does not have a split screen option. The only way to play with someone is online.
get it online or from the local stores, http://www.allcdkey.com/Left-4-Dead-PC-Games.html, spend $29.99 for left 4 dead
What u have to do is go to left 4 dead 2 and search for sacrifice and the passing and you have to buy the missions and if u don't want to then you have to get an account and play it online
4 players can play in Left 4 Dead 2.
Deadspace is one player but dead space 2 will be online with a left 4 dead style play with 4 players as human and 4 as aliens
There are a few sites, check out the Left 4 Dead forums online.
You need to have the game either on PC or Xbox 360. From there, the menu's will guide you to online play.
when u play left 4 dead 2 online on computer it is powered by anti cheat servers so maybe it is the same for xbox 360
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.
Left 4 Dead can be played on either PC or Xbox 360.
Nope, you have to be online, or if more then one person is playing you both must be online
Yes, you can. The other two characters will be filled in by AI.