: The .7z extension indicates the file is compressed using 7-Zip . You will need a tool like 7-Zip or WinRAR to extract the contents. How to Use the File
: Use 7-Zip to right-click the file and select "Extract here." Locate : Look for a folder containing an EBOOT.PBP file. gems.7z
: Designed for the PSP; homebrew software requires a console with custom firmware to run. gems.7z
: Navigate to the Game menu on your PSP and select the "Gems" icon to play. gems.7z
If you are looking for this file specifically, it is archived within collections like the PSP Homebrew Library on the Internet Archive .