Survarium is a free-to-play online first-person shooter with role-playing and survival elements developed by Vostok Games through a venture capital following the purported cancellation of S.T.A.L.K.E.R. 2 and closure of GSC Game World in December 2011. Although Survarium is external to the S.T.A.L.K.E.R. series, the developers intend to include comparable features, notably the anomalies and artifacts that reference the Russian science-fiction novel Roadside Picnic, and the 'ecological catastrophe' that renders much of the environment uninhabitable for humans.
