Don't know. I'm deliberately sticking to one specific problem here, rather than trying to describe All Games Ever, so I'm intentionally not worrying about anything after about 1700.
My general sense is that modern games are conceptually a superset of period ones, and that's not really surprising: AFAIK, there has been more ferment in the field of game design in the past century (indeed, in the past few decades) than ever previously. We're in an age where *innovation* is a prized quality in game design, and I'm not sure that's ever been true before. I doubt there is a sharp line, but I do get the sense that there has been an exponentially-growing shift in how we *think* about games...
no subject
My general sense is that modern games are conceptually a superset of period ones, and that's not really surprising: AFAIK, there has been more ferment in the field of game design in the past century (indeed, in the past few decades) than ever previously. We're in an age where *innovation* is a prized quality in game design, and I'm not sure that's ever been true before. I doubt there is a sharp line, but I do get the sense that there has been an exponentially-growing shift in how we *think* about games...