Games like The Gladiators: Galactic Circus Games

If you finished The Gladiators: Galactic Circus Games, the closest matches are Age of Empires IV, Distant Worlds: Universe, Ashes of the Singularity, Hexpand and Three Kingdoms: Fate of the Dragon. All 9 share its real time strategy (rts) genre and are ranked by how closely their themes and modes overlap.