Concubine immerses you in an alternate history of medieval Istanbul, set in the grim tones of dark fantasy. Hidden beneath the vaults of the Sultan's Harem lies an elite assassin, disguised as a beautiful concubine. Her sacred duty is to protect the ruler from countless conspiracies and otherworldly threats. By day, she leads a courtly life full of intrigue, and at nightfall, she embarks on deadly missions to eliminate enemy commanders and gang leaders threatening the stability of the empire. On these missions, she can be accompanied by up to three loyal companions, whose appearance can also be carefully customized.