Ignore ancient emulators. You want or PCSX2 Qt . As of 2025, this is the gold standard. It supports CHD and GZ files natively.
For modern emulation on PC ( PCSX2 ) or Android (AetherSX2), certain "playable" compressed formats are preferred over standard ZIP files: download ps2 roms highly compressed upd
Happy emulating, and preserve the classics. Ignore ancient emulators