I just installed left 4 dead 8 hours ago and when i try to launch it i get a error saying its unavailable, I've been trying every few hours. I dont care if i can play online i want to play single player as ive never played it before and want to get a feel for it. I have the HL orange box installed with steam and they all work. I e-mailed tech support but if they dont get back to me in the next couple hours with a solution ill be pissed, there is no excuse as to why i cant play a game in single player that i have fully installed on my computer, i dont give a shit if there server is working or not it should not matter for single player. Im starting to understand why some people hate steam and most DRM in general.