0 A.D. is a free, open-source, cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of six ancient Western civilizations, from Iberia to Persia, each depicted at their peak of economic growth and military prowess. Developed using Pyrogenesis, a ground-breaking new game engine custom-built to suit this project, 0 A.D. will give players a rich and entertaining real-time gaming experience.
The "Civic Centre" is the heart of a player's province. It functions much like a "Town Center" from Age of Empires or a "Command Center" in other RTS games, with one minor difference: Building a Civic Centre on an unclaimed well settlement claims an unclaimed territory for the player, allowing the player to expand across the map.