in the root directory of your memory card. (If it's not there, create a folder named ISO in the very first directory). Copy the .iso file into that folder.

community, where developers have spent years trying to recreate the GameMaker logic for Sony’s aging (but beloved) hardware. Why It’s a Big Deal

While is a beloved indie RPG available on modern platforms, there is no official Undertale PSP ISO released by Toby Fox or 8-4, Ltd.. The game was officially released for PlayStation Vita and PlayStation 4 , but the legacy PlayStation Portable (PSP) never received an official port due to hardware limitations and the game's engine (GameMaker: Studio) not supporting the console.