What old movies hold up because of a lack of special effects or because clever use of effects?

https://sh.itjust.works/post/49579543

What old movies hold up because of a lack of special effects or because clever use of effects? - sh.itjust.works

What older movies made a good use of either side stepping special effects or have effects that somehow still hold up today? Why are they good movies?

Definitely Forbidden Planet. Killer electronic music soundtrack as well.
The 50’s version?
I think there is only the 1956 version. Maybe you’re thinking of Day The Earth Stood Still?
It is a little slow at times, but the fun bits are really awesome. And you can get a linux package to display system info as !Krells

Ah, had to scroll too far to find this one. It should be higher. The production quality and special effects are absolutely stunning for the era. Blows my mind, underrated.

Nice job of building tension with the invisible monster. It’s also a solid movie despite the trope of “military men out on a lark fighting monsters, plus a hot chick.”