: This is currently the most recommended format for emulation. It is a lossless compression that can significantly reduce file size while remaining directly playable in PCSX2 and AetherSX2 without needing to be unzipped first.
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: Primarily used for PSP, but some older PS2 tools use it as well. It offers similar ratios to GZIP but may have a slight performance impact during heavy data loading. Essential Game Features : This is currently the most recommended format