As in previous versions, cities remain the central pillar of civilization gameplay. A city can be based on a site desired by a unit of settlers manufactured in the same way as military units. The city will then increase in population; Production of units and buildings; And create research, wealth and culture.  The city will also expand its boundaries by one or more tiles at a time, which is essential for the claim of territory and resources. The expansion process is automated and adapted to the needs of the city, but the tiles can be purchased with gold.   Investments in research agreements are lost if they are broken. That`s why you should never go to war with your research partners if you can help him — because you lose both. Civilizations can no longer trade with technology, as in previous versions of the game, instead civilizations can carry out common technological enterprises. Two civilizations at peace can form a research agreement that requires an initial investment of gold and provides the two civilizations with a certain amount of science as long as they remain at peace.  Before the PC 188.8.131.522 version of the game, civilizations were equipped with unknown technology after a series of twists and turns of uninterrupted peaceful relations. It is possible for a civilization to sign a research agreement just to get an enemy to spend money that could be used for other purposes; AI civilizations are programmed to sometimes use this tactic before declaring war.
 British actor W. Morgan Sheppard delivers the story for the opening films of the original game and its expansion packs, quotes on the discovery of new technologies and the construction of tourist sites and the introduction of the player`s chosen civilization at the beginning of each new game.  In Civilization V, the player leads a civilization from prehistoric times to the future on a reproductive map and tries to achieve one of the different conditions of victory through research, exploration, diplomacy, expansion, economic development, government and military conquest. The game is based on a brand new game engine with hexagonal tiles instead of the square tiles of previous games in the series.  Many elements of Civilization IV and its extension packages have been removed or modified, such as religion and espionage (although these have been reintroduced in their later extensions).