but then theres re-releases, like the MsPac/Galaga reunion cabs that house 25" vertical monitors.....
What about games like the Xmen side scroller that came with 2 25" monitors, one mounted to the left and one mounted face up on the right reflected into a mirror, what about punch out with 2 19" horizontal monitors mounted one over the other......
basically jack summed it up pretty well but I'd say any game made 1992 or after was made for a bigger monitor.