One of the things about the Angry Videogame Nerd that I enjoyed when he first came out (yeah, I'm that old) is that back in the mid-2000s, there was a lot of NES nostalgia, but it tended to focus on big-ticket games that were considered "good" -- Mario, Zelda, Mega Man, Castlevania, etc. -- and shared experiences like blowing on cartridges. The AVGN showcased that there were also a lot of forgotten not-so-great games from that era -- games like Dr. Jekyll & Mr. Hyde -- which are worth examining today from a standpoint of
why they were not so great. Was it developer inexperience? Were they cutting corners? What were they THINKING?!
This had the added effect of reviving interest in these old games. Today you can still play Hydlide or Silver Surfer on a real or emulated NES just as it was back then, and a NES library could hardly be considered complete without such games.
The real issue is that gaming today is a service, and that has implications for the longevity of games. City of Heroes and The Matrix Online are never, ever coming back -- not as they were, anyway, notwithstanding doujin efforts of dubious legality (see Blizzard et al. v. Jung et al. and the legal situation around bnetd) to reimplement the server backend for these games so they can continue to be played on unofficial worlds.