CS_Office Zombies | Counter Strike Zombies in Left 4 Dead 2 December 5, 2023 by Doc903 Facebook Twitter Pinterest LinkedIn A playthrough of “Counterstrike Office”, in Left 4 Dead 2, with the “Ridden” from Back 4 Blood as the Common and Special Infected. #gaming #doc903 #game #gameplay #gamer #games #fps #l4d2customcampaigns #mods #back4blood #ridden #zombies source