FraterPerdurabo: Once again, making sure that everyone is aware: Counter-Strike: Condition Zero is -66% off.
For clarity's sake, this "bundle" contains CS 1.6 which is the greatest multiplayer shooter of all time. Buy it and let me know if you want to get down into the nitty-gritty, free lessons here!
For a contrary opinion, I didn't like CS1.6 and it didn't like my computer. For some reason, I had issues getting the list of servers correctly (certain columns of info would be missing for entire sections of the list [ironically, usually they were usually -something-.ru servers]), and for some reason, while playing it on this computer, the internet would cut out.
Then there's the game. It literally feels like the only reason people would like it is that it's a "pure" tactical shooter. What I mean by that is that the only "advanced" feature it has is the ability to buy weapons at the spawn. There are no iron sights, the crosshair is static, and it feels like hitting the other players is left all up to luck as a new player. Last I remember, the accuracy on damned near everything is horrible, especially at the distances tactical shooters usually demand.
Then there's the fact that the maps are tiny, and it's hard to find a populated server that ISN'T de_dust 24/7.
I just didn't enjoy it at all.
EDIT: Oh, and usually no one communicates or coordinates at all. I suppose they all expect you know exactly what to do.