: The gold standard for PS2 emulation. It offers high compression ratios and is natively supported by the PCSX2 Emulator and AetherSX2 .

: A popular format for PCSX2 that compresses the ISO into a single file. The emulator builds an index for it, ensuring no speed difference during gameplay.

: Modern formats like CHD or GZIP compress the game data without losing any original quality.