XCOM is a science fiction video game franchise featuring an elite international organization tasked with countering alien invasions of Earth. The series began with the strategy video game X-COM: UFO Defense created by Julian Gollop's Mythos Games and MicroProse in 1994. The original lineup by MicroProse included six published and at least two canceled games, as well as two novels. The X-COM series, in particular its original entry, achieved a sizable cult following and has influenced many other video games; including the creation of a number of clones, spiritual successors, and unofficial remakes.
Ground Control is a real-time tactics video game developed by Massive Entertainment and published by Sierra Studios. It was first released onto the PC Microsoft Windows in 2000. The game focuses on a conflict between two factions vying for control of a planet and a series of alien artefacts contained on its surface, in which players take the role of an officer for each faction, working to achieve their objectives through using a variety of futuristic style of troops, engaging different tactics that make use of their units, the terrain and careful planning.
X-COM: Terror from the Deep is a strategy video game developed and published by MicroProse for the PC in 1995 and for the PlayStation in 1996. It is a sequel to X-COM: UFO Defense and the second game of the X-COM series, this time taking the war against a renewed alien invasion into the Earth's oceans.
UFO: Enemy Unknown, also known as X-COM: UFO Defense in North America and as X-COM: Enemy Unknown, is a 1994 science fiction strategy video game developed by Mythos Games and MicroProse. It was published by MicroProse for DOS and Amiga computers, the Amiga CD32 console, and the PlayStation. Originally planned by Julian Gollop as a sequel to Mythos Games' 1988 Laser Squad, the game mixes real-time management simulation with turn-based tactics. The player takes the role of commander of X-COM – an international paramilitary and scientific organization secretly defending Earth from an alien invasion. Through the game, the player is tasked with issuing orders to individual X-COM troops in a series of turn-based tactical missions. At strategic scale, the player directs the research and development of new technologies, builds and expands X-COM's bases, manages the organization's finances and personnel, and monitors and responds to UFO activity.
Tactical role-playing games, also known as strategy role-playing games and in Japan as simulation RPGs, are a video game genre that combines core elements of role-playing video games with those of tactical strategy video games. The formats of tactical RPGs are much like traditional tabletop role-playing games and strategy games in appearance, pacing, and rule structure. Likewise, early tabletop role-playing games are descended from skirmish wargames such as Chainmail, which were primarily concerned with combat.
Warhammer 40,000: Chaos Gate is a video game set in the gothic science fiction backdrop of the Games Workshop game system Warhammer 40,000. In it, players take command of a number of squads of Ultramarines to do battle with their ancient enemies the Word Bearers Traitor Marines, Chaos Demons, and their commander the Chaos Lord Zymran. A sequel, Warhammer 40,000: Chaos Gate - Daemonhunters, was released in 2022.
The Rebelstar games are a series of turn-based tactics video games designed by Julian Gollop. Rebelstar Raiders was published in 1984 by Red Shift for the ZX Spectrum. It was reworked in machine code as Rebelstar, published by Firebird in 1986. A sequel, Rebelstar II, was published in 1988 by Silverbird. Rebelstar, but not its sequel, was also adapted for the Amstrad CPC home computer.
UFO: Aftermath is a 2003 real-time tactics/turn-based strategy video game created by ALTAR Interactive. It is a homage to the X-COM game series, with roots in the unfinished game The Dreamland Chronicles: Freedom Ridge. It was followed by two sequels, UFO: Aftershock (2005) and UFO: Afterlight (2007).
The Bureau: XCOM Declassified is a 2013 tactical third-person shooter video game. It was developed by 2K Marin and published by 2K. As the eighth title in the turn-based strategy series X-COM and a narrative prequel to XCOM: Enemy Unknown, the game was released for PlayStation 3, Windows, and Xbox 360 in August 2013. Set in late 1962 at the height of the Cold War, the game's premise mainly revolves around The Bureau, the predecessor of the Extraterrestrial Combat Unit (XCOM), as they attempt to repel an alien invasion. As a tactical shooter, players can use the battle focus mode to issue commands to two other agents accompanying the protagonist, William Carter. Players can permanently lose their squad members so they must make good tactical decisions.
X-COM: Interceptor is the fourth main game in the X-COM series, developed and published by MicroProse in 1998. The game is a combination of many genres, including space flight simulation, business simulation game and strategy game elements. More specifically, the player's role includes managing a number of X-COM space stations, piloting starfighters during hostile encounters whilst co-ordinating wingmen, and managing resources and research. X-COM Interceptor, although released as the fourth game, is actually set before X-COM: Apocalypse, thus making it the third game in the chronological order. The game was re-released in 2008 for Steam and GamersGate, and again in 2016 on GOG.com.
UFO: Alien Invasion is a strategy video game in which the player fights aliens that are trying to take control of the Earth. The game is heavily influenced by the X-COM series, especially X-COM: UFO Defense.
UFO: Afterlight is a 2007 real-time tactics/turn-based strategy video game and the third in Altar Games' UFO series. Like its predecessors UFO: Aftermath and UFO: Aftershock, it combines squad-level tactical combat with overlying strategic elements inspired by the 1994 classic X-COM: UFO Defense.
Earth Defense Force 2017 is a third-person shooter developed by Sandlot, and published by D3 Publisher, for the Xbox 360. It is the follow-up to Global Defence Force, and is the first game in the Earth Defense Force series to be released in North America. Earth Defense Force 3 was the best selling Games on Demand game in Japan for 2009. The game was released on the PlayStation Vita in Japan on 27 September 2012. It was released digital-only in North America on January 8, 2013 and in the PAL region on January 16, 2013. A port of the game was released for the Nintendo Switch in Japan on October 14, 2021.
The Dreamland Chronicles: Freedom Ridge is an unreleased video game for Microsoft Windows and PlayStation 2 by Mythos Games. Developed by the team which produced X-COM: UFO Defense, including lead designer Julian Gollop, the game was planned to be "a remake of the first X-COM with 3D graphics," as the first of four games planned in the new series. Cancelled in 2001, the unfinished game was later bought and partially turned into UFO: Aftermath by Altar Interactive, which was in turn itself followed by two sequels. Some elements of the game are also present in Gollop's own Phoenix Point.
Xenonauts is a turn-based science fiction video game developed and published as the maiden title of London-based independent game studio Goldhawk Interactive. Inspired by the 1994 game X-COM: UFO Defense, gameplay involves the player taking the role of the commander of a clandestine organization known as the Xenonauts, and attempting to defeat an alien invasion of Earth in the alternate history year 1979. The game was released on June 17, 2014 for Microsoft Windows. Ports to Mac OS X and Linux were initially based on the Wine compatibility layer, until native ports became available in September 2015.
XCOM: Enemy Unknown is a 2012 turn-based tactical video game developed by Firaxis Games and published by 2K. The game is a "reimagined" remake of the 1994 cult classic strategy game X-COM: UFO Defense and a reboot of MicroProse's 1990s X-COM series. Set in an alternative version of the year 2015, the player controls an elite multinational paramilitary organization called XCOM during an alien invasion of Earth. 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 technologies from recovered alien technology and captured prisoners, expands XCOM's base of operations, manages finances, and monitors and responds to alien activity.
XCOM: Enemy Within is an expansion pack for the turn-based tactical video game XCOM: Enemy Unknown. The expansion pack primarily adds new gameplay elements to the base game, as well as introducing new themes of transhumanism via aggressive gene therapy.
XCOM 2 is a 2016 turn-based tactics video game developed by Firaxis Games and published by 2K Games. It is the sequel to 2012's reboot of the series, XCOM: Enemy Unknown; it takes place 20 years after the events of Enemy Unknown. XCOM, a military organization trying to fight off an alien invasion, has lost the war and is now a resistance force against the occupation of Earth and the established totalitarian regime and military dictatorship. Gameplay is split between turn-based combat in which players command a squad of soldiers to fight enemies, and strategy elements in which players manage and control the operations of the Avenger, an alien ship that is used as a mobile base for XCOM.
XCOM 2: War of the Chosen is an expansion pack for the 2016 turn-based tactics video game XCOM 2, released for PlayStation 4, Windows, and Xbox One on August 29, 2017. Versions for Linux and macOS were released on August 31, 2017, and a Nintendo Switch port was released on May 29, 2020.
Phoenix Point is a strategy video game featuring a turn-based tactics system that is developed by Bulgaria-based independent developer Snapshot Games. It was released on December 3, 2019, for macOS and Microsoft Windows, for Stadia on January 26, 2021, and Xbox One and PlayStation 4 on October 1, 2021. Phoenix Point is intended to be a spiritual successor to the X-COM series that had been originally created by Snapshot Games head Julian Gollop during the 1990s.
