Freeciv
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Freeciv
Freeciv is a multiplayer, turn-based strategy game for workstations and personal computers inspired by the commercial proprietary Sid Meier's Civilization series. The game's default settings are closest to Civilization II, both in gameplay and graphics (including the units and the isometric grid).
Freeciv is available for most desktop computer operating systems. Released under the GNU General Public License, Freeciv is free and open source software.