How to play Great Battles of WWII: Stalingrad on Mac

Stalingrad is a stand-alone real-time tactics game for the PC developed by Russian company DTF Games. The game features two campaigns based around the events in southern Russia between summer 1942 and early 1943. The game has two playable modes, first one is by default the RKKA (Workers' and Peasants' Red Army) campaign which follows the Red Army's progress as it liberated Stalingrad and destroyed the 6th Army. And the second mode is the Wehrmacht campaign, which has the player commanding the 6th Army as it approached the city and the battles for the city itself. The game maps themselves are reproduced from historical tactical maps and actual aerial photography taken during the period that the campaign covers.