| X-Men - Children of the Atom | EU | 1998-02 |
Acclaim Entertainment | Commercial |
| X-Men - Children of the Atom | US | 1998-02 |
Acclaim Entertainment | Commercial |
| X.Racing | JP | 1998-02-11 |
Nichibutsu (Nihon Bussan) | Commercial |
| Xenogears | JP | 1998-02-11 |
Squaresoft | Commercial |
| X-Men vs. Street Fighter - EX Edition | JP | 1998-02-26 |
Capcom | Commercial |
| XI | AS | 1998-06 |
Sony | Commercial |
| XI | JP | 1998-06 |
Sony | Commercial |
| X-Men vs. Street Fighter | US | 1998-06-11 |
Capcom | Commercial |
| Xenocracy - The Ultimate Solar War | DE | 1998-07 |
Grolier Interactive | Commercial |
| Xenocracy - The Ultimate Solar War | ES | 1998-07 |
Grolier Interactive | Commercial |
| Xenocracy - The Ultimate Solar War | EU | 1998-07 |
Grolier Interactive | Commercial |
| Xenocracy - The Ultimate Solar War | FR | 1998-07 |
Grolier Interactive | Commercial |
| Xenocracy - The Ultimate Solar War | IT | 1998-07 |
Grolier Interactive | Commercial |
| XI | JP | 1998-09 |
Sony Interactive Entertainment | Demo |
| X Games Pro Boarder | JP | 1998-10 |
Electronic Arts | Demo |
| X Games Pro Boarder | US | 1998-10 |
Electronic Arts | Commercial |
| Xenogears | US | 1998-10-20 |
Squaresoft | Commercial |
| X Games Pro Boarder | EU | 1998-11 |
Konami | Commercial |
| X-Men vs. Street Fighter | EU | 1998-11 |
Capcom | Commercial |