actual 1960s post-nuclear apocalpyse sim?

[Kyoto]

So while some games do heavily lean into the 50s/60s vibes, and originals feel more generically post-apoc. Are there any actual games or movies that simulate post-nuclear apocaplyse in the 1960s setting, genuinely. Without syfy robots or mutants or power armor. But an actual attempt at the setting?

 

[Iprovidelittlepianos]

Perhaps the movie “The War Game” from 1966 would be a good example, but to be fair I’ve never seen it. “Threads” is similar but takes place in the 1980s.