: Holds game save data (e.g., career progress, high scores, system configurations). Primary Software (Windows, Linux, macOS) and mobile emulators like Storage Capacity

Note: You cannot "play" a Mcd001.ps2 file directly. It is a storage container for save data.

Documents\PCSX2\memcards or the memcards folder within your portable installation.

: This file serves as Slot 1 for the emulator, mimicking a physical 8MB (or sometimes 32MB) PS2 memory card.