THis isn't really appropriate for the Home theatre forum. And I don't know if you mean Flat screen CRT or a flat screen as in a LCD monitor? But from personal experience on a LCD games play great and my mom's Fat screen CRT the same game is still good. More depends on the Video card for the computer system.
Haven`t you ever seen Wayne`s World one or two or the classic saturday night live skits. I was tring to type out what they say when transporting to another place or back in time or to a fantacy. Oh well, let you think what you think.