- XFrogger
- XFrogs and Flies
- XFronton
- XFrosbite
- XFrutillitas
- XFutbol
Galaxian- XGhost Manor
- XGolf
- XGopher
- XGorf
- XGrand Prix
- XGreemlins
- XGyrus
- XHaunted House
- XHe Man
- XHERO
- XHome Run
Ice Hockey- XIndianapolis
- XInfiltrate
- XJourney Scape
- XJoust
- XKaboom
- XKarate
- XKeyston Kapers
- XKing Kong
- XKrull
- XKung Fu
- XLadrillos
- XLaser Blast
- XLaser Gates
- XLily
- XLondon Blitz
- XLook 'K' Chase
- XM.A.D.
- XMalvinas
- XMandibulas
- XMario Bross
- XMASH
- XMazecraze
- XMegaforce
- XMegaMania
- XMickey
- XMiner I
- XMiner II
- XMisil Command
- XMiss Pacman
- XMission 3000 A.C.
- XMoctezuma