- XPolaris
- XPole Position
- XPool
- XPopeye
- XPorki's
- XPressure Coke
- XPressure Cooker
- XPrivate Eye
- XQuick Step
- XRiver Raid
- XRiver Raid II
- XRobin Hood
- XRobo al Banco
- XRobo Tank
- XRobot Tank
- XRoc 'n Rope
- XSeaquest
- XSir Lancelot
- XSnoopy
- XSoccer
- XSocer Real
- XSolar Fox
- XStar Wars II
- XStarMaster
- XSubterranea
- XSuper Cobra
- XSuper Kung Fu
- XSuperman
- XTennis
- XThunderbird
- XTime Pilot
- XTutankham
- XVolleyball
- XYar's Revenge
- XYars Revenger