| title | developer | year | game type | | pop. |
|---|
| X Heart | ASCII | 1998 | Windows | shooter Erotic | image | | | |
| X Rebirth | Egosoft | 2013 | Windows | action/reflex simulation flight manag./econ. Science Fiction | image | subject | label | |
| X Wars Deluxe | author | 2019 | Windows | simulation strategy Cartoon | | subject | label | |
| X-Blades | Gaijin Entertainment | 2007 | Windows | action/reflex beat 'em up Fantasy | image | | label | |
| X-COM: Alliance | Hasbro Interactive | 1999 | Windows | Science Fiction | | subject | label | |
| X-COM: Collector's Edition | MicroProse | 1999 | Windows | strategy Science Fiction | image | | 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 Software | 1999 | Windows | strategy turn-based Science Fiction | image | subject | label | |
| X-COM: UFO Defense | Mythos Games | 1999 | Windows | strategy turn-based Science Fiction | | | label | |
| X-Files: The Game | Hyperbole Studios | 1998 | Windows | adventure | | | label | |
| X-Games Pro Boarder | Electronic Arts | 1998 | Windows | sport | | | label | |
| X-Men Legends II: Rise of Apocalypse | Raven;Beenox Studios | 2005 | Windows | action/reflex Science Fiction | image | subject | label | |
| X-Men Origins: Wolverine | Raven Software | 2009 | Windows | action/reflex adventure | | | label | |
| X-Men: Children of the Atom | Capcom | 1997 | Windows | fighting Fantasy | | | label | |
| X-Morph: Defense | EXOR Studios | 2017 | Windows | action/reflex shooter strategy Science Fiction | image | | label | |
| X-Plane | Laminar Research | 2000 | Windows | simulation flight | image | | label | |
| X-Plane 10 | Laminar Research | 2012 | Windows | simulation flight | | | label | |
| X-Plane 7 | Laminar Research | ? | Windows | simulation flight | | | label | |
| X-Plane 8 | Laminar Research | 2004 | Windows | simulation flight | | | label | |
| X-Plane 9 | Laminar Research | 2008 | Windows | simulation flight | | | label | |
| X-Tension | Egosoft | 2000 | Windows | action/reflex simulation manag./econ. Science Fiction | image | subject | label | |
| X-Wing vs TIE Fighter | Totally Games | 1997 | Windows | shooter simulation flight Science Fiction | image | | label | |
| X-Wing vs TIE Fighter: Balance Of Power | Totally Games | 1998 | Windows | shooter simulation flight Science Fiction | | | label | |
| X: Beyond the Frontier | Egosoft | 1999 | Windows | action/reflex simulation flight manag./econ. Science Fiction | image | subject | label | |
| X@COM | ? | TBA | Windows | strategy Science Fiction | | | label | |
| X²: The Threat | Egosoft | 2003 | Windows | action/reflex simulation flight manag./econ. adventure Science Fiction | image | subject | label | |
| X²: The Threat | Egosoft | 2003 | Windows | action/reflex simulation flight manag./econ. Science Fiction | | | label | |
| X³: Albion Prelude | Egosoft | 2011 | Windows | simulation flight Science Fiction | image | subject | label | |
| X³: Reunion | Egosoft | 2005 | Windows | action/reflex simulation flight manag./econ. adventure Science Fiction | image | | label | |
| X³: Terran Conflict | Egosoft | 2008 | Windows | simulation flight Science Fiction | image | subject | label | |
| XAM | Anngames | 2014 | Windows | action/reflex Fantasy | image | | label | |
| Xanadu Next | XSEED Games | 2016 | Windows | | | | | |
| Xarlor | Mountain King Studios | 2000 | Windows | shooter | | | label | |
| Xarman | freefrag | 2002 | Windows | strategy board game | | subject | label | |
| xbill | ? | ? | Windows | action/reflex | | | label | |
| Xchange | Crowd | 1997 | Windows | adventure Manga | image | | label | |
| Xchange2 | Crowd | 1999 | Windows | adventure Manga | image | | | |
| Xchange3 | Crowd | 2004 | Windows | adventure Manga | image | | label | |
| XCOM 2 | Firaxis Games | 2016 | Windows | strategy turn-based Science Fiction | image | | label | |
| XCOM 2: Long War 2 | Pavonis Interactive | 2017 | Windows | strategy turn-based Science Fiction | | | label | |
| XCOM 2: War of the Chosen | Firaxis | 2017 | Windows | strategy | | | 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 Within | Firaxis Games | 2013 | Windows | strategy turn-based Science Fiction | image | | label | |
| Xena Breakout | author | 1998 | Windows | action/reflex | image | | label | |
| Xena: Warrior Princess - Death in Chains | Brilliant Digital Entertainment | 1999 | Windows | adventure Fantasy | | | label | |
| Xeno Crisis | Bitmap Bureau | 2019 | Windows | shooter | | | label | |
| Xenocide | author | 2002 | Windows | role-play Horror | image | | label | |
| Xenocracy | Simis | 1998 | Windows | 3D | | | | |
| Xenon 2000 | The Bitmap Brothers | 2000 | Windows | shooter Science Fiction | image | | label | |
| Xenon Valkyrie | Diabolical Mind | 2017 | Windows | platformer role-play | image | | label | |
| Xenonauts | Goldhawk Interactive | 2014 | Windows | strategy turn-based Science Fiction | image | | label | |
| Xenonauts 2 | Goldhawk Interactive | 2018 | Windows | strategy turn-based Science Fiction | | | label | |
| XenoRaptor | author | 2019 | Windows | shooter Science Fiction | | | label | |
| Xenosis | author | 2023 | Windows | action/reflex platformer adventure Science Fiction | | subject | label | |
| Xenotake | Vosmug | 2014 | Windows | action/reflex Manga | image | | label | |
| Xenotron | Media Verlag | 2003 | Windows | shooter Science Fiction | image | | label | |
| Xenus II: White Gold | Deep Shadows | 2008 | Windows | shooter role-play | image | subject | label | |
| Xeodrifter | Renegade Kid | 2014 | Windows | platformer | | | label | |
| XEvil | - | 1996 | Windows | fighting shooter Horror | image | | label | |
| Xiah | XIAH Studio | 2007 | Windows | role-play Fantasy | image | | label | |
| Xiama | - | 2000 | Windows | puzzle | | | | |
| xiānjiàn qíxiá zhuàn | Softstar Entertainment | 2001 | Windows | role-play Fantasy | image | | label | |
| XIBALBA | Marty Bee | 2005 | Windows | shooter | | | label | |
| XIII | Ubisoft Paris | 2003 | Windows | action/reflex shooter Cartoon | image | | label | |
| XIII Century: Death or Glory | Unicorn Games Studio | 2008 | Windows | strategy Historical | image | subject | label | |
| Xiro y la Ciudad Sumergida | Sirium Entertainment | 2005 | Windows | | | | | |
| XL1 | XLGAMES | 2005 | Windows | racing/driving | | | | |
| Xmas Shooting - Scramble !! | Orange_Juice | 2016 | Windows | shooter Manga | | subject | label | |
| Xonotic | Team Xonotic | 2012 | Windows | shooter | | | label | |
| Xotic | WXP Games | 2011 | Windows | shooter Science Fiction | image | subject | label | |
| XOXO | Graphic Core | 1998 | Windows | board game Manga | image | | label | |
| Xpand Rally | Techland | 2004 | Windows | racing/driving | | | label | |
| Xpand Rally Xtreme | Techland | 2007 | Windows | racing/driving | image | | label | |
| XPock | Dnovel | 2012 | Windows | shooter Science Fiction | | subject | label | |
| xrCore | GSC Game World | 2009 | Windows | | | | label | |
| Xross Scramble: TEAM BALDRHEAD Perfect Collection | GIGA | 2007 | Windows | action/reflex shooter Manga | image | | label | |
| Xtom 3D | Jamie System Development | 1999 | Windows | shooter | | | label | |
| Xtreme Air Racing | Victory Simulations | 2001 | Windows | flight simulation | image | | | |
| Xtreme Beach Soccer | Redfire Software | ? | Windows | sport Erotic | | | label | |
| Xtreme Beach Volleyball | Redfire Software | ? | Windows | sport Erotic | | | label | |
| xuānyuán jiàn cān：yún yǔ shān de bǐ duān | Softstar Entertainment | 1999 | Windows | adventure role-play Fantasy | | | label | |
| XUltima IV | author | 2011 | Windows | role-play | | | label | |
| Xump: The Final Run | Retroguru | 2014 | Windows | puzzle | | | label | |
| Xyanide Resurrection | Playlogic | 2008 | Windows | shooter Science Fiction | image | | label | |
