Pcsx2 Games Highly Compressed Work [better] Link

You may find downloads claiming to be 50MB or 100MB RAR or ZIP archives that extract into full-sized ISOs.

: Unlike standard ZIP or 7Z archives, which require full extraction before use, formats like pcsx2 games highly compressed work

This digest covers why people compress PlayStation 2 (PS2) game files for PCSX2, common formats and methods, trade-offs, best practices, and actionable steps to use highly compressed games with PCSX2 while minimizing issues. You may find downloads claiming to be 50MB

The format, originally from MAME, is the gold standard. which require full extraction before use