Delta Green - Wikipedia
Delta Green is a setting for the Call of Cthulhu role-playing game created by Adam Scott Glancy, Dennis Detwiller, and John Scott Tynes, a.k.a. the Delta Green Partnership, of the Seattle gaming house Pagan Publishing. Delta Green is set in the contemporary era, revolving around a highly secretive organization known as Delta Green, tasked with protecting the United States from paranormal and alien threats. Delta Green takes the classic setting of the Cthulhu Mythos from Call of Cthulhu and mashes it with conspiracy fiction.
In August 2011, Arc Dream Publishing and the Delta Green Partnership announced development of a standalone Delta Green role-playing game.[1] Funding began in 2015 and in 2016 the Agent's Handbook was released followed by the Handler's Guide in 2018. Arc Dream Publishing also made a partnership with Pelgrane Press to release a prequel named The Fall of DELTA GREEN using the Gumshoe System in 2018.[2]
Delta Green is a contemporary setting, starting in the mid-1990s with intermittent updates thereafter. The game revolves around a fictitious secret organization, created by the U.S. Government following the covert raid on the town of Innsmouth, Massachusetts mentioned in H.P. Lovecraft's The Shadow Over Innsmouth. The organization takes its name from its World War II era codename.
