| Game Name | System |
|---|
| Wyspa | Atari 800 |
| Wyvern F-0 | MAME |
| Wyvern Wings (set 1) | MAME |
| Wyvern Wings (set 2) | MAME |
| Wyzle (1983)(David Buehler)[k-file] | Atari 800 |
| X (Japan) | GB |
| X (Japan) (Proto) | SNES |
| X (USA) (Proto) | GB |
| X Card of Fate (TV Animation X) (J) [!] | WSC |
| X Com 2 Terror From The Deep (1995)(Microprose Software Inc) | DOS |
| X Com 2 Terror From The Deep (1995)(Microprose Software Inc)(Rev1) | DOS |
| X Com 2 Terror From the Deep v2.0 Update (1995)(Microprose) | DOS |
| X Com Ufo Defense (1994)(Microprose Software Inc) | DOS |
| X Com Ufo Defense (1994)(Mythos Games) | DOS |
| X Com Ufo Defense (1994)(Mythos Games)(Rev1) | DOS |
| X Factor (Empire) (MPU5) (set 1) | MAME |
| X Factor (Empire) (MPU5) (set 2) | MAME |
| X Factor (Empire) (MPU5) (set 3) | MAME |
| X Factor (Empire) (MPU5) (set 4) | MAME |
| X Five Jokers (Version 1.12) | MAME |
| X Force | MAME |
| X Games Skateboarding (USA) | PS2 |
| X Marks The Spot (Bellfruit) (Scorpion 4) (set 1) | MAME |
| X Marks The Spot (Bellfruit) (Scorpion 4) (set 2) | MAME |
| X Marks The Spot (Maygay) (EPOCH) (1.4, set 3) | MAME |
| X Marks The Spot (Maygay) (EPOCH) (1.5, set 1) | MAME |
| X Marks The Spot (Maygay) (EPOCH) (1.5, set 2) | MAME |
| X Maze (1983)(Jonathan Smith) | ZX Spectrum Z80 |
| X Maze (1983)(Jonathan Smith)[a] | ZX Spectrum Z80 |
| X Men 2 The Fall Of The Mutants (1990)(Paragon Software) | DOS |
| X Men Madness In The Murderworld (1989)(Paragon Software Corporation) | DOS |
| X Multiply (Japan, M72) | MAME |
| X Multiply (World, M81) | MAME |
| X Rock (1991)(Softworld) | DOS |
| X Se Dae Quiz (Korea) | MAME |
| X Squad (Europe) | PS2 |
| X Squad (USA) | PS2 |
| X Tom 3D | MAME |
| X Word (19xx)(David Lockett) | ZX Spectrum Z80 |
| X Word Puzzle | Atari 800 |
| X Zone (Europe) | SNES |
| X Zone (Japan, USA) | SNES |
| X the Ball | MAME |
| X'Mission (Unknown) (PAL) | 2600 |
| X'eye (USA, NTSC) | MAME |
| X's & O's | MAME |
| X-07 | MAME |
| X-15 Alpha Mission (E) | C64 Tapes |
| X-360 Surrounding Your World with Sound [U] [SLUS-90021] | PS1 Demos |
| X-Band Modem BIOS (Japan) | SNES |
| X-Band Modem BIOS (USA) | SNES |
| X-Bladez - Inline Skater (E) | PSX |
| X-Bladez - Inline Skater (E)(Venom) | GBA |
| X-Bladez - Inline Skater (U)(Oldskool) | GBA |
| X-Bladz - In-Line Skating (USA) | PSX2PSP |
| X-Bladz - In-Line Skating [U] | PSX |
| X-Com - Terror from the Deep (E) | PSX |
| X-Com - UFO Defense (USA) | PSX2PSP |
| X-Com - UFO Defense [U] | PSX |
| X-Day 2 (Japan) | MAME |
| X-Files (2.00) | MAME |
| X-Files (2.04) | MAME |
| X-Files (3.03 France) | MAME |
| X-Files (3.03) | MAME |
| X-Files (USA) | PSX2PSP |
| X-Files [Disc1of4] [U] | PSX |
| X-Files [Disc2of4] [U] | PSX |
| X-Files [Disc3of4] [U] | PSX |
| X-Files [Disc4of4] [U] | PSX |
| X-Files, The (F) (Disc 1) | PSX |
| X-Files, The (F) (Disc 2) | PSX |
| X-Files, The (F) (Disc 3) | PSX |
| X-Files, The (F) (Disc 4) | PSX |
| X-Files, The - Resist or Serve (Europe) | PS2 |
| X-Files, The - Resist or Serve (USA) | PS2 |
| X-II CPC-400 (Korea) (MSX2) | MAME |
| X-II CPC-400S (Korea) (MSX2) | MAME |
| X-IT-50 - The Quest for the Meaning of Life | Amiga |
| X-It | Amiga |
| X-Kaliber 2097 (Europe) | SNES |
| X-Kaliber 2097 (USA) | SNES |
| X-Kaliber 2097 (USA) (Beta) | SNES |
| X-Man (1983) (Universal Gamex Corporation, Alan Roberts, H.K. Poon) (1005) | 2600 |
| X-Mas Horror | Atari 800 |
| X-Men (2 Players ver AAA) | MAME |
| X-Men (2 Players ver EAA) | MAME |
| X-Men (2 Players ver JAA) | MAME |
| X-Men (2 Players ver UAB) | MAME |
| X-Men (4 Players ver ADA) | MAME |
| X-Men (4 Players ver AEA) | MAME |
| X-Men (4 Players ver EBA) | MAME |
| X-Men (4 Players ver JBA) | MAME |
| X-Men (4 Players ver UBB) | MAME |
| X-Men (6 Players ver ECB) | MAME |
| X-Men (6 Players ver UCB) | MAME |
| X-Men (Europe) | Genesis |
| X-Men (USA) | Genesis |
| X-Men (USA, Europe) | Game Gear |
| X-Men - Children of the Atom (E) | PSX |
| X-Men - Children of the Atom (USA) | PSX2PSP |
