Civilization is a series of turn-based strategy, 4X video games, many of them produced by Sid Meier (Sid Meier's Civilization).
All titles in the series share similar gameplay, centered on building a civilization on a macro-scale from prehistory up to the near future. Each turn allows the player to move his or her units on the map, build or improve new cities and units, and initiate negotiations with the computer-controlled players. In between turns, computer players can do the same. The player will also choose technologies to research. These reflect the cultural, intellectual, and technical sophistication of the civilization, and usually allow the player to build new units or to improve their cities with new structures. In most games in the series, one may win by military conquest, achieving a certain level of culture, building an interstellar space ship, or achieving the highest score, among other means.