Things You'll Need
Instructions
Stop your Counter Strike Condition Zero server. Adding mods while the server is running is dangerous.
Open a Web browser and navigate to the Zombie Plague Mod page on the Allied Modders website.
Click on the "zp_plugin_50.zip" link at the bottom of the post to download the Zombie Mod. Save the archive on your hard drive.
Right-click on the archive and select the "Extract All" option from the resulting menu. Select the desktop and click on the "Extract" button to extract the contents of the archive to your desktop. A folder named "addons" appears on your desktop.
Click on the "zp_resources.zip" link and save the archive on your hard drive. Right-click on the archive and select the "Extract All" option from the resulting menu. Select the desktop and click on the "Extract" button to extract the contents of the archive to your desktop. Three folders appear on your desktop: sprites, sound and models.
Right-click on the "addons" folder and select the "Copy" option from the menu. Open your operating system's file browser. Navigate to the "/condition zero\cstrike" folder and press the "Ctrl" and "V" keys at the same time to paste the "addons" folder in the "cstrike" folder. Select to overwrite all files.
Hold the "Ctrl" key and click on the "sprites," "sound" and "models" folders to select all of them. Press the "Ctrl" and "C" keys at the same time to copy the folders to the clipboard.
Go to the "\condition zero\cstrike" folder and press the "Ctrl" and "V" keys at the same time to paste the three folders inside the "cstrike" folder. Select to overwrite any existing files.
Go to "\condition zero\cstrike\addons\amxmodx\configs" folder. Open the "zombieplague.cfg" file in a text editor to change the settings of the new game mod.
Change the settings to make the game more interesting. Each setting has a detailed description. For example, change the "zp_nemesis_base_health" setting from "2000" to "4000" to give your zombies 4,000 health points. You can change virtually any settings from this configuration file, even the game play.
Save the "zombieplague.cfg" file and close the text editor. Restart your Condition Zero server and test the Zombie Mod. Adjust the settings in the configuration file until you are satisfied with the game.