- XMr. Postman
- XNafia
- XOcean City
- XOutlaw
- XPacman
- XPeetfal
- XPeetfal
- XPetfal
- XPhanton Tank
- XPinball
- XPinball
- XPit Fall
- XPlag Attack
- XPlant Patrol
- XPlug Attack
- XPukkmen
- XPukman
- XReever Raad
- XReever Raad
- XReever Raad II
- XRiver Raid II
- XRiver Raid III
- XRobot Attack
- XS.O.S.
- XSea Hawk
- XSea Houck
- XSea Qust
- XSeea Gueast
- XSkai Dive
- XSky Drive
- XSlock
- XSluck
- XSoccer
- XSpace Envador
- XSpace Ship
- XSpace Trip
- XSpaidder Fight
- XSparker Gardon
- XSpider Fighter
- XStar War
- XSuperman
- XSuppermen
- XSweet Home
- XTank City
- XTennis
- XTermool
- XTheamk
- XTime Warp
- XTokey Kong
- XUFO Attack