0 A.D. is a free and open-source real-time strategy video game under development by Wildfire Games. It is a historical war and economy game made an international group of volunteer game developers and it is AMAZING. The game is cross-platform, playable on Windows, macOS, Linux, FreeBSD, OpenBSD, even Raspberry Pi! Stanislas Dolcini has been working on 0 A.D. for years and shares with Scott how it started and how it's going!
- https://play0ad.com for free!