C-evo - C-evo is a freeware empire building game for Windows
FreeCiv - Freeciv is an open-source, turn-based strategy game based on Civilization II.
Sid Meier’s Civilization VI - Sid Meier’s Civilization VI is a Turn-based Strategy, War, Tactical, Single and Multiplayer video game created by Firaxis and published by 2K.
The Battle for Wesnoth - The Battle for Wesnoth is a turn-based tactical strategy game with a high fantasy theme.
UniWar - UniWar is a turn-based strategy game where players battle it out on the field with units of...
Freeciv for Android - Port of Freeciv to Android - similar to Civilization series.