| title | developer | year | platform | | pop. |
|---|
| Pocket UFO | SMK Software | 2006 | WinCE | strategy turn-based Science Fiction | | | label | |
| Pocket UFO | SMK Software | 2006 | Windows | strategy turn-based Science Fiction | image | | label | |
| Pocket UFO | SMK Software | 2006 | Mobile | strategy turn-based Science Fiction | | | label | |
| The Bureau: XCOM Declassified | 2K Marin | 2013 | X360 | shooter Historical | image | | label | |
| The Bureau: XCOM Declassified | 2K Marin | 2013 | Windows | shooter Historical | image | subject | label | |
| The Bureau: XCOM Declassified | 2K Marin | 2013 | PS3 | shooter Historical | image | | label | |
| X-COM: Alliance | Hasbro Interactive | 1999 | Windows | Science Fiction | | subject | label | |
| X-COM: Apocalypse | author | 2014 | Linux | strategy Science Fiction | | | label | |
| X-COM: Apocalypse | Microprose | 1997 | MS-DOS | strategy Science Fiction | image | subject | label | |
| X-COM: Collector's Edition | MicroProse | 1999 | Windows | strategy Science Fiction | image | | label | |
| X-COM: Enemy Unknown | Microprose | 1995 | PS | strategy turn-based Science Fiction | image | subject | label | |
| X-COM: Enforcer | Microprose | 2001 | Windows | action/reflex shooter Science Fiction | image | | label | |
| X-COM: First Alien Invasion | Hasbro Interactive | 1999 | Windows | strategy Science Fiction | | | label | |
| X-COM: Genesis | Hasbro Interactive | 1999 | Windows | strategy Science Fiction | | subject | label | |
| X-COM: Interceptor | Microprose | 1998 | Windows | shooter flight Science Fiction | image | subject | label | |
| X-COM: Terror from the Deep | Microprose | 1996 | PS | strategy turn-based Science Fiction | image | | label | |
| X-COM: Terror from the Deep | Microprose Software | 1995 | MS-DOS | strategy turn-based Science Fiction | image | subject | label | |
| X-COM: Terror from the Deep | Microprose Software | 1999 | Windows | strategy turn-based Science Fiction | image | subject | label | |
| X-COM: Terror from the Deep | ? | ? | 3DO | strategy turn-based Science Fiction | | | label | |
| X-COM: Terror from the Deep | ? | ? | Pandora | strategy turn-based Science Fiction | | | label | |
| X-COM: UFO Defense | Mythos Games | 1999 | Windows | strategy turn-based Science Fiction | | | label | |
| X-COM: UFO Defense | Mythos Games | 1994 | MS-DOS | strategy turn-based Science Fiction | image | subject | label | |
| X-COM: UFO Defense | Mythos Games | 1994 | Amiga AGA | strategy Science Fiction | image | subject | label | |
| X-COM: UFO Defense | Mythos Games | 1994 | Amiga CD32 | strategy Science Fiction | image | | label | |
| XCOM 2 | Firaxis Games;Feral Interactive | 2016 | Mac OS X | strategy turn-based Science Fiction | | | label | |
| XCOM 2 | Firaxis Games | 2016 | Linux | strategy turn-based Science Fiction | | | label | |
| XCOM 2 | Firaxis Games | 2016 | Windows | strategy turn-based Science Fiction | image | | label | |
| XCOM 2 | Firaxis Games | 2016 | PS4 | strategy turn-based Science Fiction | | | label | |
| XCOM 2 | Firaxis Games | 2016 | Xbox One | strategy | image | subject | label | |
| XCOM 2: Long War 2 | Pavonis Interactive | 2017 | Linux | strategy turn-based Science Fiction | | | label | |
| XCOM 2: Long War 2 | Pavonis Interactive | 2017 | Windows | strategy turn-based Science Fiction | | | label | |
| XCOM: Chimera Squad | Firaxis Games | 2020 | Windows | strategy turn-based Science Fiction | | | label | |
| XCOM: Enemy Unknown | Firaxis Games | 2012 | Windows | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Unknown | Firaxis Games | 2012 | X360 | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Unknown | Firaxis Games | 2012 | PS3 | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Unknown | Firaxis Games | 2013 | iOS | strategy turn-based Science Fiction | | | label | |
| XCOM: Enemy Unknown | Firaxis Games | 2013 | Mac OS X | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Unknown | Feral Interactive | 2014 | Linux | strategy turn-based Science Fiction | | | label | |
| XCOM: Enemy Within | Firaxis Games | 2013 | Windows | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Within | Feral Interactive | 2014 | Linux | strategy turn-based Science Fiction | | | label | |
| XCOM: Enemy Within Commander Edition | Firaxis Games | 2013 | PS3 | strategy turn-based Science Fiction | image | | label | |
| XCOM: Enemy Within Commander Edition | Firaxis Games | 2013 | X360 | strategy turn-based Science Fiction | image | | label | |
