A free app for Android, by Pilav Prodüksiyon.

Zaptiye is a free and entertaining game that is big on historical vibes, crime fighting, detective play, firearms, and more. It is set in the city of Constantinople, in the time of the great Sultan Abdulhamid. You will encounter an assortment of quests and enemies, alles and armors, main missions and side quests. There’s a lot of action, adventure, gunfight, murder, mystery, gangs, and a whole lot of crime.

This game features an open world, the element of role play, an interesting story line with side quests, awesome weapons, vehicles and horses, a very informative map to help you navigate this universe, and an immersive historical atmosphere.