github.com/sfttech/openage (go): Free (as in freedom) open source clone of the Age of Empires II engine :rocket:
Keywords: age-of-empires|c-plus-plus|clone|cmake|cpp|cpp20|engine|entity-component-system|game|game-development|game-engine|linux|multiplayer|nyan|openage|opengl|python|qt|rts-engine