Games similar to 0 A.D. include Age of Empires. It's paid, but Widelands and Beyond All Reason are free. Other options are Warcraft III, StarCraft, Age of Mythology and openage. RTS Games like 0 A.D. are a crowded field, with more than 25 alternatives for Windows, Linux, Mac, Android and the web.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!.
United States
Patron builds upon the foundations laid out by the staples of the survival city builder genre and enhances the experience with a large research tree and by introducing intricate social dynamics into the game and the genre in general.
Annex: Conquer the World is a indie real time strategy game. Play as one of four factions, over 30 tech trees, original maps, and tileset.
Imperial Domination II is a turn-based strategy game, set after the conquests of Alexander the Great and before the rise of the Romans. Expand your empire by trade, diplomacy, knowledge or just brute force. It's up to your to decide the fate of Europe.
Stonehearth is a game of exploration and survival in an epic fantasy setting. Build your town, care for your hearthlings, and defend against marauding invaders.
United States
Dominus is a free multiplayer browser strategy game. Grow in power by conquering other player's castles and making them your vassal. Vassals send their lord part of their income. Make everyone in the game your vassal to become the Dominus.
Australia
Kingsera is a free multiplayer browser strategy game. Grow in power by conquering other player's castles and making them your vassal. Vassals send their lord part of their income.
Tentlan is a free strategy real-time online game played in the times of the pre-Columbian Americas. Starting off with a small settlement in the rainforest, you will gather power and influence till you end up developing a great maya empire.
Germany
EU
Europa 1400: The Guild (also titled Europa 1400 or The Guild) is a simulation game set in Europe from the year 1400 up to 1815. In it, the player tries to guide a family dynasty to power and wealth, starting from one character of limited means.
GermanyEU
