For the uninitiated, the Gameshark (and its competitor, Action Replay Max) was a cheat device that plugged into your PS2. It allowed players to input codes for infinite health, max ammo, unlocking secret characters, and skipping levels.
PCSX2’s internal cheat engine is faster, more stable, and doesn’t require a separate boot disc.
: Applying Gameshark codes to the ROM and verifying that they work as intended is critical. This step ensures that not only is the ROM compatible, but the cheat functionality is also operational.