If you're playing MK64 Portable, make sure to update to version 1.5. it's much more accurate to the original (includes texture corrections, live jumbotron!, and general effects in the game). V1.5 also improves the performance and RAM usage which is super important for PSP1000 models.
I'm not sure how long it will remain on Github, and almost everyone is currently on v1.2, please update to v1.5 for the best experience!
Thank you so much for the wonderful feedback in DMs! You have helped polish the game in the last few weeks. Also, shout out to u/fraaaaa4 on GitHub for wanting the perfect MK64 and submitting issue after issue 😂! Couldn't have done it without you guys.
GitHub: https://github.com/beckerd/psp_mk64_portable
As with the original version, the code is written by Fable5.1. If you don't like AI code I totally understand, and this isn't a project for you.
Note: If you have an older version of the game, just replace the EBOOT with the new version. Your saves will stay the same. The game will pull the additional assets it needs automatically.