This long-form article dives deep into the origins of the PSP version, the concept of a “REPACK,” legal alternatives, and a step-by-step guide to getting the game running—if you choose to go the homebrew route.
Undertale launched in 2015 for PC and Mac. Later, official ports arrived on PlayStation 4, PlayStation Vita, Nintendo Switch, and Xbox One. Notably, the did receive an official port, but the older PSP (released in 2004) never got an official release from Toby Fox or 8-4 Ltd. Undertale Psp Iso Download REPACK
If you are seeing "ISO" or "REPACK" downloads for the PSP, they generally fall into two categories: This long-form article dives deep into the origins
Instead of risking malware or piracy, try these methods: the concept of a “REPACK