The Flashpoint Archive is a big project to preserve old web games (Adobe Flash based games, animations etc).
It has a really cool video about what it does on its website: https://flashpointarchive.org/
Go check it out. It’s literally a treasure trove of old games.
Here are some screenshots:
If you want to help them find more old games to archive, there’s a tool you can run on your old computers to find delisted games in your browser cache:
https://flashpointarchive.org/datahub/Recovering_Files_from_Browser_Cache#Flashpoint_Cache_Dumper
Note that there are always privacy/security considerations when running random internet software to scan your files.
this is fucking cool. quite impressive how they even made custom tools for this!