Ye olde treasure of PirateWill.
Animal Farm - https://www.romhacking.net/hacks/7148
Dinosaur Planet - https://dinosaurpla.net
Portal 64 - https://github.com/mwpenny/portal64-still-alive
Smash Remix - https://smash64.online/remix
The Swoop 64 - https://github.com/zestydevy/birdjam
Super duper secret beta testing area.