GSC Game World in the Chornobyl Exclusion Zone: the 2007 original, its prequel, its sequel and the 2024 return, all anomalies and artefacts.
The prequel a year before Shadow of Chernobyl: a mercenary called Scar, a faction war over the Zone you can fight on any side of, and emissions to find cover from.
Three large maps, a proper ending and far fewer bugs; the Zone game to start with.
The Zone rebuilt in Unreal 5, finished in Ukraine during a war.
The Zone around the reactor, anomalies and artefacts; the Ukrainian shooter from Roadside Picnic.
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