Q: Can I play Mortal Kombat 9 on my PSP device? A: There is no official PSP version of Mortal Kombat 9, but you can explore other Mortal Kombat games available for PSP.
This is the only mainline Mortal Kombat game released for the PSP. It is an expanded port of Mortal Kombat: Deception Characters : Includes the full roster from plus PSP-exclusive characters like Q: Can I play Mortal Kombat 9 on my PSP device
To summarize, while the specific search for a "Mortal Kombat 9 PSP ISO" leads to a dead end, the path for portable Mortal Kombat gaming is still very much alive. For a native experience on a PSP, Mortal Kombat: Unchained is your best bet. But for the ultimate goal of playing the 2011 blockbuster Mortal Kombat 9 on a portable device, ditch the PSP search and focus your efforts on emulating the version using Vita3K emulator. It is an expanded port of Mortal Kombat: