I'd say the worst time period is probably psx1/n64 days.
some of those games look like hot garbage if you don't have the nostalgia goggles going for you.
NES and SNES don't seem to have aged as poorly. there are still indie games with a similar style being put out that can be successfully marketed alongside the current crop of games.
This post was edited on 4/8 at 1:23 am