Before you fill your drive with "Ultra Compressed" 50MB versions of 4GB games, be aware of the downsides:
: The emulator builds an index file the first time you load it, ensuring there is no in-game speed penalty. 2. Ultra-High Archive Compression high compressed ps2 games
Some games compress to 90% of their original size because they contain "dummy" data (padding to push data to the fast outer edge of the DVD). Here are the best candidates for high compression: Before you fill your drive with "Ultra Compressed"
| Game Title | Original ISO Size | High Compressed (CHD) | Savings | | :--- | :--- | :--- | :--- | | | 4.2 GB | 1.1 GB | 74% | | God of War II | 8.5 GB | 3.3 GB | 61% | | Gran Turismo 4 | 5.6 GB | 2.1 GB | 62% | | Kingdom Hearts II | 4.1 GB | 1.7 GB | 58% | | Shadow of the Colossus | 4.7 GB | 1.9 GB | 59% | | Bully (Canis Canem Edit) | 4.4 GB | 2.0 GB | 55% | | Final Fantasy X | 4.3 GB | 2.3 GB | 46% | | Silent Hill 2 | 4.1 GB | 1.5 GB | 63% | | GTA: San Andreas | 4.5 GB | 2.4 GB | 47% | | Tekken 5 | 4.6 GB | 1.2 GB | 74% | Here are the best candidates for high compression:
Many games run fine on PCSX2 when compressed to .cso (level 5–9) or .gz.iso . Cutscenes, music, and gameplay are intact if only video/audio is re-encoded (not removed).
⚠️ Many of these are but user-made repacks from forums (CDRomance, Archive.org, etc.).
Shrinks the file size by removing padding while keeping the game data identical to the original. Ripping (Lossy):