If you prefer to use a ROM hack directly, you can use the PSP's best N64 emulator, , which was initially created in 2006 and has been improved over time to run many games. It's considered one of the best options for this purpose.

While the specific "Super Mario Galaxy 64" mod is not yet on the PSP, the situation is fluid and exciting. The fact that a full, playable port of Super Mario 64 now exists on the PSP demonstrates the console's untapped potential for running these kinds of games. The homebrew community is constantly innovating. As the official project on GitHub matures and becomes more stable, or as other developers become interested in porting it, we could very well see a version of this cosmic fusion running on Sony's handheld in the future.

El fangame es un proyecto independiente (no es ROM, es ejecutable nativo de PSP) que copia la jugabilidad 2.5D con temática espacial. Corre a 60 FPS y viene en español. Lo encuentras en sitios de homebrew como PSP-Homebrew .