Games like Armada 2526: Supernova

If you finished Armada 2526: Supernova, the closest matches are Stellaris, Endless Space 2, Age of Wonders: Planetfall, Galactic Civilizations II: Dread Lords and Master of Orion II: Battle at Antares. All 7 share its turn-based strategy (tbs) genre and are ranked by how closely their themes and modes overlap.