As if an arcade version of Left 4 Dead wasn't enough, zombies will also be invading the Counter-Strike series later this year in a new title by Valve publishing partner, Nexon. Counter-Strike Nexon: Zombies, set for release as a PC exclusive on Steam in Q3 of 2014, will introduce "countless undead" into the free-to-play multiplayer action of Counter-Strike: Online. Multiple new weapons, maps, and gamemodes are set to be introduced alongside the classic Hostage Rescue and Bomb Defusal modes, all of which will see teams battle it out in a competitive environment while also fighting off ways of fast-moving zombies, potentially adding another layer of strategy to the traditional Counter-Strike formula. While the game is being developed by Nexon, Counter-Strike Nexon: Zombies is an officially licensed game promoted by Valve themselves, as recently mentioned by Valve's VP of marketing, Doug Lombardi. Given these comments, it's very likely CSN:Z will run on a modified version of a zombie mode which already exists within Counter-Strike: Online, Nexon's own free-to-play version of Counter-Strike which has been very popular in the Asian PC gaming scene for a number of years. No concrete release date for the game has currently been set, but the Q3 2014 window has us thinking the title may be fittingly released sometime prior to Halloween. Stay tuned to ValveTime to learn more about this interesting new free-to-play Counter-Strike spin-off if and when we learn more.