I have never played Counter Strike: Source until I bought it to download Age of Chivalry on Steam. This certainly was not what I was expecting. : r/gaming
CSS: Zombie Escape Mod - ze_Madness_v2_1 on NiDE - YouTube
ZombieMod FAQ - Setting up a Server [Counter-Strike: Source] [Tutorials]
Counter-Strike:Source-Zombie Escape Server [Non-Steam] - YouTube
ZM] Zombie Mod CSS Servers, Counter-Strike Source monitoring