| XZR II (MSX2) | Exile | Telenet Japan | December 1988 | Role Playing > Action RPG | MSX | N | N | Y | N |
| Xiao Ma Li | Small Mary (multicarts); Bingo | Idea-Tek, C&E | 1990 | Other | NES | N | N | N | Y |
| Xexyz | Kame no Ongaeshi: Urashima Densetsu | Hudson | 26 August 1988 | Action > Platformer | NES | N | N | N | Y |
| Xevious: Fardraut Saga | No Alternate Title | Namco | 1988 | Action > Shooter | MSX | N | N | Y | N |
| Xevious | No Alternate Title | Namco | 08 November 1984 | Action > Shooter | NES | N | N | Y | Y |
| Xerd no Densetsu | Legend of Xerd; Zerd no Densetsu | Vic Tokai | 18 October 1991 | Role Playing | GB | N | N | N | Y |
| Xenon 2: Megablast | No Alternate Title | Imageworks | 1991 | Action > Shooter | SMS | N | N | Y | N |
| Xenon 2: Megablast | No Alternate Title | Virgin Interactive | 1992 | Action > Shooter | GEN | N | N | Y | Y |
| Xenogears | No Alternate Title | Square | 11 February 1998 | Role Playing | PSX | N | Y | Y | Y |
| Xenoblade Chronicles | No Alternate Title | Nintendo | 06 April 2012 | Role Playing > Action RPG | WII | N | Y | N | N |
| XDR - X-Dazedly-Ray | No Alternate Title | UNIPACC | 26 August 1990 | Action > Shooter | GEN | N | N | Y | N |
| Xanadu Next | No Alternate Title | Falcom | 27 October 2005 | Role Playing > Action RPG | PC | N | N | Y | N |
| Xak: The Art of Visual Stage (MSX2) | No Alternate Title | Micro Cabin | 1989 | Role Playing > Action RPG | MSX | N | N | Y | N |
| Xak: The Art of Visual Stage | No Alternate Title | SunSoft | 26 February 1993 | Role Playing > Action RPG | SNES | N | N | Y | N |
| Xak III: The Tower of Gazzel | No Alternate Title | Micro Cabin | 1991 | Role Playing > Action RPG | MSX | N | N | Y | N |
| Xak III: The Eternal Recurrence | No Alternate Title | NEC | 30 September 1994 | Role Playing > Action RPG | TGCD | N | N | Y | N |
| Xak II: Rising of the Redmoon (MSX2) | No Alternate Title | Micro Cabin | 02 November 1990 | Role Playing > Action RPG | MSX | N | N | Y | N |
| Xak II | No Alternate Title | Microcabin | 1990 | Adventure | PC98 | N | N | Y | N |
| X2: Wolverine's Revenge | X-Men 2: Wolverine's Revenge | Activision | 15 April 2003 | Action Adventure | GBA | N | N | Y | N |
| X-Men Mutant Apocalypse | No Alternate Title | Capcom | November 1994 | Action > Platformer | SNES | N | N | Y | Y |
