I think that in the heyday that parent (but not grandparent) is referring to, all that you needed to maintain state was to have a memory card of your own. I rem

I think that in the heyday that parent (but not grandparent) is referring to, all that you needed to maintain state was to have a memory card of your own. I remember playing GameCube games at a local video game cafe place when I was a kid, and I would either just play a game from scratch with whatever card they had lying around, or I would bring my own memory card.