I'd say... too soon to tell.
For a game to be continued to be played 15 years from now I think it needs to have a few distinct qualties. Most importantly be the peak of a genre that isn't really innovated on or being made that much.
The Super Mario Brothers games lasted on because they were simply the best, tightest platformers that existed, and platformers are a rare breed.
It's the same reason people go back to Fallout 1&2 so much. Nobody even makes turn based D&D type RPGs anymore.
Even stuff like Goldene Eye and Perfect Dark... when was the last time there was a game seemingly focused on splitscreen in the same room party style FPS vs mode?
We won't know, until we find out what genres or styles (if any) become a casualty of the next generation.
