The best free alternative to 0 A.D. is Starcraft. If that doesn't suit you, our users have ranked more than 25 alternatives to 0 A.D. and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to 0 A.D. are openage (Free, Open Source), Widelands (Free, Open Source), Littlewargame (Free) and MegaGlest (Free, Open Source).
Starcraft is a strategy game by Blizzard Entertainment. Based in the distant future, you must gather resources and expand your forces to lead them to victory. Represent entire series of Starcraft games.
From legendary game designer Brian Reynolds (Civilization II, Rise of Nations), DomiNations is an epic new strategy game of exploration, advancement, and conquest. Lead your Nation to ultimate victory throughout all of human history – from the Stone Age to the Space Age!
Master the art of ancient tactics as Roman, Gaul or Teuton! TRAVIAN is a multiplayer strategy browser game. As a player in TRAVIAN, you will build your own empire, recruit a mighty army, and fight with your allies for game world domination.