Counter-Strike: Global Offensive will be launching on the 21st and will include it’s very first mod.
Rather than releasing the zombie mod on a later date, Valve thought it was prudent to include it at launch to keep the fans happy and inform them to keep expecting more in the future.
The announcement came on it’s official blog:
It was important to us as we developed CS:GO to make sure it was as moddable and extensible as any CS game. So this is just one of many mods that will be available to CS:GO in the coming months.
The zombie mod will be available on Steam for download when the game launches this Tuesday.
The mod will be available via Steam.