- XAtlantis
- XBasquete
- XBobbi
- XBobby Is Going Home
- XBoliche
- XBoxing
- XBuck Rogger
- XCarnival
- XChopper Command
- XCircus Atari
- XCommando Raid
- XCosmic Corridor
- XCrackpots
- XDemon Attack
- XDishaster
- XDonkey Kong
- XDonkey Kong Jr.
- XDragon Fire
- XEggomania
- XEnduro
- XFantastic Voyage
- XFishing Derby
- XFrankstein
- XFree Way
- XFrogger
- XFrostbite
- XGhoper
- XGrand Prix
- XHERO
- XIce-Hockey
- XJawbreaker
- XKaboom
- XKeystone Kapers
- XKing Mines
- XKrull
- XLaser Blast
- XLaser Gates
- XMASH
- XMegaforce
- XMegaMania
- XMisses Pac Man
- XMongol Maniaco
- XMoon Patrol
- XMouse Trapp
- XMr. Do!
- XPac Man
- XPitfall
- XPlake Attack
- XPlanet Patrol
- XPolaris