Also see Unciv[1] which is based on Civ5. It works on Android and desktop environments and is very actively maintained and improved. Freeciv is based on Civ1/2.

Also see Unciv[1] which is based on Civ5. It works on Android and desktop environments and is very actively maintained and improved. Freeciv is based on Civ1/2. [1] https://github.com/yairm210/Unciv https://github.com/yairm210/Unciv