The Civilization series has inspired several unofficial Civ-like games.
Those three are all free to download and play, and there are some options for two or more human players to compete. There is no sign that the developers plan to stop making improvements.
The term "unofficial" should probably include the commercial game Call to Power II, because it was produced without any license from any company associated with Sid Meier after the producer had had a license to produce one game using the name; that was Civilization: Call to Power.
|Civ II||Conflicts in Civilization • Fantastic Worlds • Test of Time|
|Civ III||Play the World • Conquests|
|Civ IV||Warlords • Beyond the Sword • Colonization (Total conversion)|
|Civ V||Gods & Kings • Brave New World|
|Beyond Earth||Rising Tide|
|Civ VI||Rise and Fall • Gathering Storm|
|Official Spinoffs||Sid Meier's Colonization • Sid Meier's Alpha Centauri (Alien Crossfire) • Civilization Revolution • CivWorld • Civilization Revolution 2 • Sid Meier's Starships|
|Other games:||Freeciv • Imperialism • Civilization: Call to Power • Call to Power II • FreeCol • CivCity: Rome • C-evo • NewCol|
|Comparisons||Comparison between Civilization games • Civilizations|