IGN Music writes: "The first thing that jumps out at you about the soundtrack to the latest MGS installment is that well-known Hollywood composer Harry Gregson-Williams provides the core elements to the score. Granted the likes of Japanese composers Nobuko Toda, Shuichi Kobori, Kazuma Jinnouchi, and several others are featured, as well, but its Gregson-Williams' presence that undoubtedly lends the whole affair a big-budget blockbuster vibe.
Gregson-Williams music encapsulates no less than 14 entries on this double disc collection. He is only eclipsed by the 23 tracks contributed by the trio of Toda/Kobori/Jinnouchi. For his part Gregson-Williams melds sweeping orchestral elements with scathing electronics to create intense passages such as the opener "Old Snake" or the kinetically rhythm driven "Gekko." Then there's the screaming vengeance electro-squalor of "BB Corps" and the shifting tide of electro funk, futuro jazz, and mock industrialism of 'Breakdown.'"