The only legal method to play a PSP game via emulator is to rip the ISO from your own physical game.
The Myth of the Forza Horizon PSP ISO: Reality, Emulation, and Alternatives
If you search the internet, you will find YouTube videos and emulation blogs offering download links for a Forza Horizon PSP ISO . If the game was never made, what are these files actually? They fall into two categories: 1. Texture Mods and Fan ISO Hacks (Safe but Basic)
It’s important to clarify a key fact upfront:
The short answer is . There is no official Forza Horizon game for the PlayStation Portable. 1. Platform Exclusivity
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