

The combat system has been overhauled, removing stacking of military units and enabling cities to defend themselves by firing directly on nearby enemies.

The game is based on an entirely new game engine with hexagonal tiles instead of the square tiles of earlier games in the series.Many elements from Civilization IV and its expansion packs have been removed or changed, such as religion and espionage (although these were reintroduced in its subsequent expansion). In Civilization V, the player leads a civilization from prehistoric times into the future on a procedurally generated map, achieving one of a number of different victory conditions through research, exploration, diplomacy, expansion, economic development, government and military conquest.

Sid Meier's Civilization V is a 4X video game in the Civilization series developed by Firaxis Games, released on Microsoft Windows in September 2010, OS X on November 23, 2010, and Linux/SteamOS on June 10, 2014. A number of publications, including GameSpy, GameTrailers and Giant Bomb, named it Game of the Year.

Several reviewers also commented on the game's very high levels of difficulty, replayability, and addictiveness. Upon its release, it was often regarded as one of best titles in its genre. XCOM: Enemy Unknown was critically acclaimed, with averaged ratings of close to 90% for all versions at both GameRankings and Metacritic. The player commands troops in the field in a series of turn-based tactical missions between missions, the player directs the research and development of new technologies from recovered alien technology and captured prisoners, expands XCOM's base of operations, manages XCOM's finances, and monitors and responds to alien activity. Set in the near future during an alien invasion of Earth, the game puts the player in control of an elite multinational paramilitary organization called XCOM and tasked with defending the Earth. A stand-alone expansion pack titled XCOM: Enemy Within was released in November 2013. In June 2014, Feral released both XCOM: Enemy Unknown and its expansion pack XCOM: Enemy Within for LinuxĪ port for iOS was released in June 2013 and an Android conversion was released in May 2014. An "Elite Edition", containing all previously released downloadable content, was released as a Mac OS X exclusive by Feral Interactive in April 2013. XCOM: Enemy Unknown was released on Octoin North America and three days later in Europe and Australia for Microsoft Windows, PlayStation 3 and Xbox 360. The game is a "reimagined" remake of the 1994 cult classic strategy game UFO: Enemy Unknown (also known as X-COM: UFO Defense) and a reboot of MicroProse's 1990s X-COM series. XCOM: Enemy Unknown is a military turn-based tactical alien invasion/planetary defense strategy science fiction video game, developed by Firaxis Games and published by 2K Games.
