PPSSPP (emulator) / Custom Firmware PSP Compression Source: Fan-repacked .CSO / .ISO (size reduced from ~1.2GB to ~200–400MB)
If you want to save space on your phone or PC while keeping full quality: Naruto Ultimate Ninja Heroes 2 Highly Compressed
is a top-tier choice. Released in 2008 for the PSP, this game remains a favorite for mobile gamers using emulators like because it is easily "highly compressed" to roughly PPSSPP (emulator) / Custom Firmware PSP Compression Source:
Features 32 playable characters, including unlockables like Itachi, Jiraiya, and Orochimaru. including unlockables like Itachi
True “highly compressed” (CSO) will be ~200–250 MB . Anything smaller is either an archive or a stripped-down hack.