For anyone having trouble running the flash games, I found at least for me what fixed all my issues* was using
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. Specifically, Ruffle player build
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or earlier. I found specifically 2024-09-14 is when some of the flashes stop working, but the vast majority still work with current Ruffle builds. Full disclosure, I only tested the windows-64 builds to come to this conclusion, but from what I understand it shouldn't be different for other targets (or if you build from source yourself).
Figured sharing this was worth not adhering to my username.
* - Without having to go to an extreme like running a VM of something like Win XP.