I hope early digital games will be preserved better than early films:

"around 75% of original silent-era films have perished ... Of the American sound films made from 1927 to 1950, an estimated half have been lost"

https://en.wikipedia.org/wiki/Lost_film

That's a very different (but still interesting) story.

Mainly it's down to the materials technology of the time, and the fact that cellulose was need for war purposes

And at least one fire destroying a studios film archives.

https://en.wikipedia.org/wiki/1965_MGM_vault_fire

(That article says that many other film studios destroyed old film prints, so it's not just fires (explosions really, since nitrocellulose film tends to go boom, plus even in the best case it degrades into an unusable mess with time))