Metal Gear 20th Anniversary: ​​Metal Gear Solid Collection is an eight-disc set commemorating the 20th anniversary of the Metal Gear franchise. This set is exclusive to Japanese territory. The collection includes all of the canonical Metal Gear games available at the time: - Metal Gear Solid - Metal Gear Solid 2: Sons of Liberty - The Document of Metal Gear Solid 2 - Metal Gear Solid 3: Snake Eater - Metal Gear and Metal Gear 2: Solid Snake (on one PlayStation 2 disc) - Metal Gear Solid: Portable Ops (with exclusive cover art) - Metal Gear Saga Vol. 2