GamesFPSMilitary survival FPS Gray Zone Warfare blows past even Manor Lords to become Steam’s new hit, selling 500,000 copies after just 3 days despite Early Access troublesWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. GamesFPSMilitary survival FPS Gray Zone Warfare blows past even Manor Lords to become Steam’s new hit, selling 500,000 copies after just 3 days despite Early Access troublesWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works. (Image credit: Madfinger Games) Gray Zone Warfare launched into Steam Early Access on April 30, but it already looks like a certified hit for developer Madfinger Games. As of May 1, the FPS game had sold over 400,000 copies, but a press release earlier today reveals that Gray Zone Warfare has now managed to shift over 500,000 copies …