0 A.D., the game developed by Wildfire Games that was open-sourced in 2009
, is now up to its fourth alpha release. The first 0 A.D. alpha
came last August, but with this fourth alpha, those trying out this open-source game now have improved performance, improved rendering, a prototype version of the opponent AI, and other changes.
Some of the other features to be found in the 0 A.D. Alpha 4 build include improved fog-of-war rendering, terrain texture blending, opt-in automatic feedback system, fixed foundation obstruction handling, support for build limits, extended animal AI (animals like lions and elephants can now fight back and/or escape away from threads), improved driver version detection, and various performance improvements.
When it comes to this game's CC-BY-SA artwork, there are new naval units, new siege weapons, and new bridges. This new alpha release also brings new in-game sound effects.
Read more and multi-platform download links in their release announcement