Wildfire Games has released the 11th alpha version, codenamed "Kronos", of the open-source real-time strategy game "0 A.D.", which stands for "Zero Anno Domini". The new release differentiates the Celtic faction into Britons and Gauls. There is also a new sound system and improved AI and graphics.
As the name suggests, O A.D. is set in years around zero A.D. and simulates nine unique civilizations of that era. It has a number of multi-player modes that are similar to those in Age of Empires, developed by Microsoft. Players create and build civilizations that need to be defended against enemy nations.