I want to buy this game for my MacBook and this game got delisted from Steam Store Page. What happend exactly?

I want to play zombies with other people but nobody is ever on. (the only maps I have are kino, five, and ascension)

Would be genious,

Hello Mac Players This Game is Dead 0 multiplayer servers for the past couple of days and there is some players like one two or if your lucky 4 and there maybe players but there is no servers for them to play on and zombies i waited for a good 2 hours waiting in a lobby and no luck the best way play black ops 1 on a mac is to run windows on bootcamp but i think this game had it last Game Over R.I.P Bo1 For mac...

im starting this thread back up because im gettin into zombies again! :D well add if u wanna play (would prefer u to have skype) i have the rez dlc too so :P my game also doesnt run that well, since my mac is pretty BAD :I