0 A.D. is an open-source, 3D real time strategy game with an ancient warfare theme, developed by Wildfire Games, and using the Pyrogenesis engine.
0 A.D. started originally as a mod concept for Age of Empires II, but in 2009 Wildfire Games licensed the code under the GPL and announced it will be open-source, available for Linux, Windows and Mac OS X.
The game is currently under heavy development, and the latest alpha was released on October 19 2010 (Alpha 2 ‘Bellerophon’) and it currently includes the following features:
– 3D graphics using OpenGL
– 1 civilisation units & buildings
– fog of war
– group movement and basic unit formations
– population limits
– repair command
– unit following camera mod
– building rotation keys