You can download Counter-Strike Condition Zero (custom) maps from Gamebanana.com Just find a desired map, find the download option, and you should have the downloaded map in no time!
steampowered.com download steam client and you can get the game from them there.
of you want to download counterstrike condition zero for free then copy and paste this link at the long bar up: http://www.megaupload.com/?d=9W8L4NVW (free from viruses) (for free)
buy it
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It really depends on the speed of your internet. With 2+ mbps download speed, you could download it in less than an hour.
go crack.ms ont this site look for wepan cs zero and download the first link!!! run it where the game .exe file is present and enjoy
steampowered.com download the client and you can find the game there to purchase and get virtual disk download other then that its hard to find it in stores.
You can try redownloading it. Open Steam > Right-Click "Condition Zero" > Click "Delete Local Content" After it is deleted, click it and press "Install" for it to download again. This should get you all the correct files and clear up corrupted ones.
On the Steam "Games" tab, click "Activate a product on Steam...".
steampowered.com download the client and go to their store and you can find CS CZ there.
Steam is the best, buy through that. http://store.steampowered.com/app/10/