0 A.D.
Historical real-time strategy game with open development and mod support.
Why it is included
Ambitious libre RTS with long-running community—frequent subject of “open games” articles.
Best for
RTS fans wanting civ-style sandbox without DRM.
If you use Windows, Mac, or paid tools
RTS alternative to Age of Empires and commercial historical RTS for open-source LAN play.
Strengths
- Historical detail
- Moddable
- Cross-platform
Limitations
- Still evolving; perf varies
Good alternatives
Warzone 2100 · MegaGlest
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