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| XCOM: Enemy Within | |
|---|---|
 North American cover art of XCOM: Enemy Within Commander Edition | |
| Developer(s) | Firaxis Games |
| Publisher(s) |
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| Producer(s) | Clint McCaul Garth DeAngelis |
| Designer(s) | Ananda Gupta |
| Programmer(s) | Justin Boswell |
| Artist(s) | David Black |
| Writer(s) |
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| Composer(s) | Michael McCann |
| Series | XCOM |
| Engine | Unreal Engine 3 |
| Platform(s) | Microsoft Windows, Linux, OS X, iOS, Android, PlayStation Vita, PlayStation 3, Xbox 360 |
| Release | |
| Genre(s) | Turn-based tactics |
| Mode(s) | Single-player, multiplayer |
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: Enemy Within was released for Microsoft Windows, PlayStation 3, and Xbox 360 in November 2013 and received generally favorable reviews from critics. In June 2014, Feral released both XCOM: Enemy Within and its base game XCOM: Enemy Unknown for Linux. The game also came to the iOS App Store and Google Play Store a year after the initial release, on November 12, 2014. On March 22, 2016, the game was released on the PlayStation Store for PlayStation Vita.
The Windows, OS X and Linux editions require XCOM: Enemy Unknown to play; Enemy Within was released for Xbox 360 and PlayStation 3 as part of the Commander Edition bundle with Enemy Unknown. The iOS and Android versions were released as stand-alone apps not requiring the original mobile port of Enemy Unknown to play. The PlayStation Vita version is only available bundled with Enemy Unknown under the title, XCOM: Enemy Unknown Plus.