Freeciv Go

Freeciv is a free turn-based multiplayer strategy game, in which each player becomes the leader of a civilization, fighting to obtain the ultimate goal: To become the greatest civilization. Players of Sid Meier's Civilization® series should feel at home, since one aim of Freeciv is to have rulesets with compatible rules. Freeciv is maintained by an international team of coders and enthusiasts, and is easily one of the most fun and addictive network or individual-versus-computer video games out there!