If you truly want to play the actual Condition Zero campaign on your Android phone, there is one legitimate (though technically complex) method:
Since there is no "one-click" official installer, you must follow a manual process to get the game running. Counter Strike Condition Zero Free Download For Android
Full - latest version - Download Counter-Strike: Condition Zero If you truly want to play the actual
: On your PC, locate your CS:CZ installation. Copy the valve and czero folders into a new folder named xash . Counter Strike Condition Zero Free Download For Android
: You earn "Reputation Points" by winning scenarios, which are then used to "buy" and recruit more skilled AI teammates.
There is no official app for Android. Any website offering a direct "APK download" for this game is likely providing a fake file or malware.