If you own a hacked PlayStation Vita (the PSP's successor), you can play the official PlayStation version of Undertale. The Vita can also run a PSP emulator (Adrenaline), though you would run the native Vita version of Undertale for the best experience. Safe Ways to Experience Undertale Mobilely
The downloaded files are usually corrupted ZIPs or disguised executable (.exe) files meant to infect your computer. How People Play Undertale on PSP undertale psp iso download exclusive
The PSP was designed for JRPGs and indie games. Playing Undertale during a commute or in bed feels authentic to the game’s retro aesthetic. The screen size and controls fit the game’s simple, direct nature perfectly. 2. A New Way to Experience the Story If you own a hacked PlayStation Vita (the