- XDonkey Kong
- XDonkey Kong Junior
- XDragon Attack
- XDragon Fire
- XDuende
- XEnduro
- XEspringer
- XFrankestain
- XFrogger
- XFrostbite
- XGalaxian
- XGhost Busters
- XGran Prix
- XH.E.R.O.
- XInvasores
- XJames Bond
- XJawbreaker
- XJungle Hunt
- XKanguro
- XKarate
- XKeystone Kapers
- XKrull
- XKung Fu
- XKung Fu II
- XKung Fu Master
- XLaser Gate
- XLili
- XM*A*S*H
- XMario Bros.
- XMiner 2049
- XMiner 2049er Volume II
- XMontezuma Revenge
- XMoon Patrol
- XMoonsweeper
- XMr. Do!
- XMs Pac Man
Ms Pac-Man- XP Choper Command
- XP Enduro
- XP Keystone Kapers
- XP Moon Patrol
- XP River Raid
- XP Tenis Real
- XPac Man
- XPac-Man
- XPele
- XPengo
Phoenix- XPitfall
- XPitufos