Downloading "super compressed" games from unverified websites poses several risks:
A standard "ISO" is a bit-for-bit copy of the original Blu-ray disc. A highly compressed version takes that massive ISO and runs it through algorithms (like WinRAR, 7-Zip, or specialized repack tools) to shrink the file size by 50% to 80%.
How it works:
The result: A game that was originally 25 GB (like Uncharted 3) might shrink down to 6 GB for download.
The most effective way to legitimately shrink a PS3 game is by removing unnecessary language files (audio packs for French, German, Spanish, etc.) and 3D movie files. Tools exist (often used by the scene release group "DUPLEX" or through custom repacks) that strip these out, reducing a game like Metal Gear Solid 4 (originally 30GB+) down to a much more manageable size. Ps3 Iso Games Highly Compressed
The PS3’s hypervisor and file system expect original sector layouts. Highly compressed data must be decompressed on-the-fly (like real-time decoding), which the PS3’s aging Cell processor cannot handle without severe lag. Most “compressed ISOs” are actually split RAR files of the original ISO – a common bait-and-switch.
Key point: PS3 games are already partially compressed by developers using proprietary algorithms. Further high-ratio lossless compression is extremely difficult. The result: A game that was originally 25
While "magic" compression doesn't exist, there are legitimate ways to make PS3 game files smaller: