- XKangaroo
- XKanguru
Kaystone- XKaystone Kapers
- XKeystone Kapers
- XKing Kong
- XKung Fu
- XLaser Gates
- XLoch 'n Chase
- XM.A.D.
- XMario Bros.
- XMega Force
MegaMania- XMiner 2049
- XMissile Command
- XMoon Patrol
- XMoonsweeper
- XMoto Cross
- XMotocross
- XMotorcross
- XMr. Do
Mr. Postman- XMs. Pac Man
- XMs. Pac-Man
Name This Game- XNight Driver
- XNo Scape
Pac Man- XPengo
- XPhoenix
- XPimball
- XPinball
- XPitfall
- XPlanet Patrol
- XPlaneta Patrol
- XPlaque Attack
- XPole Position
- XPopeye
- XPress. Cocker
- XRiders of Lost Ark
River Raid- XRiver Raid II
River Raid III
River Raid IV- XRobot Tank
- XScreaming
- XSeaquest
- XSexta-Feira 13
- XShootin Gallery
- XSmurf