- XDefender
- XDemon Attack
- XDonkey Kong
- XEnduro
- XEspial
- XFlash Gordon
- XFrankenstein
- XFrogger
- XFrostbite
- XGalaxian
- XGremlins
- XGyruss
- XHe-Man
- XHERO
- XInternational Soccer
- XJungle Hunt
- XKeystone Kaper
- XKrull
- XKung Fu
- XLaser Gate
- XLost Luggage
- XM.A.D.
- XMario Bros.
- XMegaMania
- XMickey Mouse
- XMontezuma Revenge
- XMoon Patrol
- XMoon Sweeper
- XMoto Cross
- XMr. Postman
- XPac-Man
- XPele Soccer
- XPengo
- XPhoenix
- XPitfall
- XPlaque Attack
- XPolaris
- XPole Position
- XPopeye
- XPorky's
- XPrivate Eye
- XRaiders of the Lost Ark
- XReturn of Jedi
- XRiver Raid
- XSeaquest
- XSex Man
- XSmurf
- XSpider Fighter
- XSpider Man
- XStar Trek