– Tap “Games” > navigate to your PSP/ISO folder > select the MKX ISO.
You might also find an ISO for Mortal Kombat 9 (MK9) modded for PSP. Here is the difference: Mortal Kombat X PPSSPP ISO Zip File Latest Edit...
The gameplay remains rooted in the older PSP engine but attempts to bridge the gap with the following: Character Roster: – Tap “Games” > navigate to your PSP/ISO