As a Ruffle developer who in my day job maintains some Flash-based websites, I'll note from experience that AMF serialization/deserialization in Ruffle has some definite issues, so that may be the issue for your games (the websites I maintain use https://metacpan.org/pod/AMF::Perl). See https://github.com/ruffle-rs/ruffle/issues?q=is:issue+state:....
noduerme|14 days ago
https://ruffle.rs/compatibility/avm2
danielhjacobs|14 days ago
strongbond|14 days ago
danielhjacobs|14 days ago