0 A.D. Overview
0 A.D. is a free, open-source real-time strategy (RTS) game for Windows and Linux developed by Wildfire Games, set in the warfare and economics of ancient civilizations between roughly 500 B.C. and 1 A.D. In the tradition of historical RTS games, you gather resources, construct a base and economy, build armies, and wage war as one of many detailed ancient civilizations, each with distinctive units and buildings. It features high-quality 3D graphics, single-player matches against AI, and online multiplayer, and is notable for being a genuinely free, polished, and ambitious open-source game still in active development. The full offline installer bundles the complete game and installs without an internet connection. It includes random map generation, a scenario editor for custom battles, and regular updates from its active development team. This page links to the official 0 A.D. download.