New Release: 0 A.D. Alpha 24: XÅ¡ayÄrÅ¡Ä news 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 twelve ancient civilizations, from Iberia to Mauryan India, 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. ReportRSS New Release: 0 A.D. Alpha 24: XÅ¡ayÄrÅ¡Ä Wildfire Games, an international group of volunteer game developers, proudly announces the release of 0 A.D. Alpha 24: âXÅ¡ayÄrÅ¡Äâ (pronounced: Khsha-ya-á¹sha), the twenty-fourth alpha version of 0 A.D., a free, open-source real-time strategy game of ancient warfare. The release is named after Xerxes the Great, ruler of the Achaemenid Empire from 485 to 465 BC.