>>3768576
because "forgotten ruin" is a more exciting dungeon than "empty cave"
so they whip up a previous civilization who left the ruins or magical weapons or whatever for their game. Less cynical and far more interesting answer is because the anon posting megalithic ruins is right. We have lost so much history and that nagging amnesia tantalizes mankind.
>>3783657
based fuck the haters. Youre bringing up cool shit and getting attacked for it.
Here's one thats relevant;
>Yonaguni Monument
stone ruins south of Japan that might indicate a lost civilization. This interests the japs. Something like a meteor or a magnetic pole shift or a great flood or earthquake could have flooded massive parts of the map. I am no expert on japoanese archaeology but don't they dig up mysterious totems every so often that their civilization doesn't remember making?

disappointed in the closeminded and overly hostile ITT. OP asked why post-cataclysm or post-collapse settings are popular, people answered with "it happens a lot in human history so it is relatable", and now you're all tweaking crying about aliens and shit.
>>3794333
You aren't being empirical, faggot. Anon pointed out the stones imply advanced stonecutting. If you know how the Inca cut the granite then tell us. Otherwise, you just sound like the people that chimped out when they first hypothesized that dinos had feathers, or that the Earth was round.
"science is always right so nobody is allowed to hypothesize or ask questions" isn't how the scientific method works, retard.