Sid Meier's Civilization VI is a 4X video game in the Civilization series. Development of Civilization VI is being led by the teams that produced the expansions for Civilization V, and will include many of the gameplay mechanics introduced from those expansions. Civilization VI is a turn-based strategy video game in which one or more players compete alongside computer-controlled AI opponents to grow their individual civilization from a small tribe to control of the entire planet across several periods of development. New to Civilization VI is the of idea of "city unstacking": some improvements to cities must be placed in the hexes in the bounds of the city but not within the city's space itself, whereas in previous games, all improvements were considered stacked on the same map hex or square that the city was located in. For example, having built a quarry will help boost the research into masonry. Technologies based on having access to water, such as sailin