Ken and I have been playing an emulated version of the ~1983 Commodore 64 release of the original "Mario Brothers", the platform game. Today we upgraded to the circa 1997 version of Mario Kart from the days of the Nintendo 64.
Ken's having a blast. One of these years maybe we'll move into the decade between the 90's and the current decade. Not sure what video games looked like back then. I guess we'll find out!