Cut scene music, however, is more overtly cinematic, with stronger use of orchestral and choral elements. A synthetic feel, often similar to ambient music, which increases pace and begins to introduce strings during the more tense moments, was used for the in-game moments with a distinctly video game style looping nature. The soundtrack provided a style which would be re-visited in future installments of the Metal Gear series. The booklet for this album has the words 'Adenine', 'Thymine', 'Guanine', and 'Cytosine' written on it, which are all elements of DNA. The current edition of the Japanese print does not come with the cardboard sleeve. Limited print editions of the Japanese copy and the standard European copy have cardboard sleeves accompanied with the discs jewel case (albeit with slightly different design). A total of three versions of the soundtrack were released, with the 'Metal Gear Solid Control Mix' track missing from the earliest version.
The album was released on September 23, 1998, by King Records bearing the catalog number KICA-7895.
Metal Gear Solid Original Game Soundtrack is the official soundtrack for Metal Gear Solid.
