Primarily used for PSP games to reduce the footprint of UMD images. The Risks of "Highly Compressed" Third-Party Sites
No legitimate emulation project (MAME, RetroArch, Dolphin, PPSSPP) uses the name “Saferoms”. The term appears on: saferoms highly compressed
To achieve "highly compressed" status, ROM distributors typically move beyond standard files toward more advanced algorithms: LZMA/LZMA2 (7-Zip): Primarily used for PSP games to reduce the
If you download a "Saferoms highly compressed" bundle (e.g., "All PS1 RPGs – 20GB down to 5GB"), you must use 7-Zip (free) or WinRAR . Do not use the built-in Windows extractor—it often fails with LZMA2 compression used by Saferoms. saferoms highly compressed