The answer is or, more accurately, conversion . Skilled modders have taken the PlayStation 1 version of Mortal Kombat Trilogy (widely considered the best home version due to its loading times and animation) and converted it into an EBOOT.PBP file—a format the PSP can natively run via POPS (the built-in PS1 emulator on PSP). These files are often mistakenly labeled as “ISOs” in pop culture, but the end result is the same: a playable, portable Mortal Kombat Trilogy.
The PSP has a built-in emulator for original PlayStation games. Fans convert the PS1 files into files (Eboots) to play them on the go. Homebrew Mods: There is a famous fan-made project called MK Anthology Mortal Kombat Trilogy Psp Iso
Have you successfully run Mortal Kombat Trilogy on your PSP? Share your settings and mods in the comments below (on our original forum post). And for more retro emulation guides, check out our articles on Tekken 3 PSP ISO and Castlevania: SotN EBOOT fixes. The answer is or, more accurately, conversion