Title: 0 A.D.

• Developer: Wildfire Games.
• Version: Alpha 23 (12/2018).
• Birthdate: 2001.
• Development Status: Has been under constant development for many years, Alpha is equivalent to many other games’ full releases.
• Requirements: Windows, Linux, or Mac.
• Rating: 9/10.
• Site: http://play0ad.com/
• Description: A free, open-source, cross-platform real-time strategy (RTS) game of ancient warfare covering from approximately 500 B.C. to 500 A.D.

Features

• Twelve Civilizations: Romans, Carthaginians, Celtic (Britons, Gauls), Hellenic States (Athenians, Spartans, Macedonians), Iberians, Mauryan Empire, Persian Empire, Diadochi (Successor) States (Macedonians, Seleucids, Ptolemies).
• Real-Time Strategy.
• Multi Player.
• Single Player.
• Beautiful Graphics.

Press

• Mike Williams. O A.D. Raises the Game for Open-Source RTS. BetaNews. 6/14/2012.