Metal Gear Solid 3: Subsistence for PS2 was an expanded re-release of MGS3: Snake Eater, adding a crucial new 3D camera option, online multiplayer (Metal Gear Online), and bonus content like the original MSX Metal Gear games, making it the definitive PS2 version, often released as a 3-disc set in North America/Japan (with the "Existence" disc) and a 3-disc version in Europe/Australia due to delays. It refined gameplay with instant-use rations, removed some complex first aid, but kept the core stealth action with significant quality-of-life upgrades