Extermination review. Classic Game Room presents a CGR Undertow review of Extermination for the PlayStation 2 developed by Deep Space and published by Sony. Something has gone horribly wrong at a research facility in Antarctica. Sgt. Dennis Riley is sent to investigate, and he finds that beneath the frozen landscape, a truly hellish scene awaits. A classically styled survival horror game, Extermination pits players against a strange infestation of hideous monsters. This video review features video gameplay footage of Extermination for the PlayStation 2 and audio commentary from Classic Game Room's Derek.