Like almost all emulators, youll have to download the BIOS. Ghost of Sparta is loosely based on Greek mythology and is set in ancient Greece with revenge as its central theme.
How To Extract and Play PSP ROM Files on PPSSPP I recommend the 7-Zipper application which you can get on your Android device and Windows PC via this link. 7z formats, you would require a 7zip extractor to extract it.
The 15 games listed above tops the list of best PSP games for the ppsspp emulator on any OS, especially on Android and Windows since both of them are the currently the most popular operating systems now. Crash of the Titans - Click Here to Download Crash of the Titans ISO (483 MB)