The town listed as "Kamensk" in the game (259, 172) has been called "Kamensk-Schachtinski" since 1929, according to German Wikipedia... and Luftwaffe reports from the wartime era. It also houses a huge chemical plant (both then and now).
Luftgeographische Einzelheft. Mittel- und Ostrussland - umfasst das Territorium bis an das Ural-Gebirge ostwärts. Allgemeine fliegirische Verhältnisse, Wetterzustand. 1.01.1942