Do you buy video games? I've got more than 6000 for free
freakspot.net
6 votes c/freepost Posted by jorgesumle — 6 votes, 1 comments — Source
1 vote DustDFG

Can also recommend (thought you will need to check each repo individually) awesome-open-source-games and https://freegamedev.net/ because there you can find fresh and usually in development floss games