Those who purchase Volume 1 will also have access to a variety of bonus content including the two regional versions of Metal Gear, the original version of Snake's Revenge, the first and second Digital Graphic Novels in video form, and a digital soundtrack.

[Title lineup]
Metal Gear (Western release version)
Metal Gear (Japanese release version)
Snake's Revenge

[Video]
Metal Gear Solid: Digital Graphic Novel
Metal Gear Solid 2: Digital Graphic Novel

*Available as additional downloads.

[Soundtrack]
Metal Gear Solid: Digital Soundtrack

More details on the official game page of METAL GEAR SOLID: MASTER COLLECTION Vol.1 BONUS CONTENT ...