"Nostalgic value" refers to the sentimental or emotional worth attached to something because it reminds us of pleasant memories from our past. Full definition
Even if it holds nostalgic value to you, I can't see anyone playing this game today and having any fun. (xblafans.com)
For them the trilogy will have a more nostalgic value. (metacritic.com)
There's always a few things that you find particularly cool, that are extra entertaining or that you just hold a strong nostalgic value too. (retro-video-gaming.com)