The title says it all. All games can and will get a little stale over time but what game keeps you coming back. If you could only own one machine for the rest of your life what would it be and why. Mine would be CFTBL. It's the full package with great art, hard shots, fun but challenging modes, great mods to add, and an extremely hard multiball. For whatever reason I can always go play it and have fun. AC/DC would be a close second but I thing CFTBL is a better overall package and the short ball times of it help it not get stale.