Games like Sid Meier's Civilization VI: Gathering Storm

If you finished Sid Meier's Civilization VI: Gathering Storm, the closest matches are Age of Empires III, Sid Meier's Civilization II, Conquest of the New World, Warhammer 40,000: Gladius - Relics of War and Imperialism II: Age of Exploration. All 6 share its strategy genre and are ranked by how closely their themes and modes overlap.