That's an interesting and slightly unusual request! "GMod" (Garry's Mod) is a PC sandbox physics game, while "PSP" (PlayStation Portable) is a handheld console that never officially got a version of GMod.
So, I'll interpret your request in a few creative ways. I'll provide: gmod psp
Users replace PSP game textures (e.g., Armored Core: Formula Front) with GMod’s toolgun icons and loading screens. This is cosmetic only. That's an interesting and slightly unusual request
Many YouTube videos titled "GMOD PSP GAMEPLAY" actually show: A conceptual "Feature List" for what a hypothetical
While it lacks the complexity of the PC version, the homebrew project includes several core mechanics that define the Garry's Mod experience:
The Downside: The PSP screen is 480x272 resolution. Text will be unreadable, and the latency (input lag) will be around 150-300ms. This is only for novelty, not serious building.