We strongly advise you however to upgrade to benefit of the following fixes: Gameplay remains untouched and both versions of Alpha 25 remain multiplayer-compatible. Alpha 25 “Yaunā”, the twenty-fifth alpha version of 0 A.D., a free, open-source real-time strategy game of ancient warfare. Wildfire Games, an international group of volunteer game developers, is happy to announce the re-release of 0 A.D.