If you want to play the game legally, here are your best options:
The stunning cinematics in Crisis Core are a highlight. In highly compressed versions, these may look pixelated or blurry. crisis core final fantasy vii psp highly compressed
This is the gray area. If you own a physical UMD copy of Crisis Core: Final Fantasy VII , downloading a compressed backup (ROM/ISO) for use on an emulator or a modded PSP is generally considered under "Fair Use" / backup provisions in many jurisdictions (though check local laws). If you want to play the game legally,
: A high-ratio format that often requires specific plugins to run. The Trade-offs of "Highly Compressed" crisis core final fantasy vii psp highly compressed