The general minimum for a National Landmark is 50 years. This would make any game released prior to 1975 eligible. That is a good chunk of games. That said, protecting works of art are usually much shorter terms. Works of art can be justified to be protected almost immediately depending on the artist and work.
Its sort of like complaining your favorite pub got shut down though, isn’t it?
If that pub has been around long enough that it can reasonably be argued that it is part of regional heritage, then yes.
I don’t know any video game thats been around long enough to be called a historical landmark or whatever terminology.
The general minimum for a National Landmark is 50 years. This would make any game released prior to 1975 eligible. That is a good chunk of games. That said, protecting works of art are usually much shorter terms. Works of art can be justified to be protected almost immediately depending on the artist and work.