Soundtrack included with Grey Goo: Definitive Edition.
Credits and tracklist are extracted from the listing credits document included with the soundtrack, with Disc 4 as the only exception.
Disc 1: The Beta
Disc 2: The Humans
Disc 3: The Goo
Disc 4: The Shroud
Music composed, produced, performed, mixed, and mastered by Frank Klepacki
Live Orchestra & Live Choir production by:
Dynamedion GbR, Germany
Session management: Pierre Langer
Session booking: Antonello Martina
Session producer: David Christiansen
Orchestrator: David Christiansen
Additional Orchestration: Dawit Khosrovian
Orchestra: Budapest Scoring Symphony Orchestra
Conductor: Tamas Bolba
Choir: Budapest Cantate Choir
Conductor: Zoltan Pad
ProTools engineer: Miklos Lukacs
Sound engineer: Gabor Buczko
Recording producer: Miklos Lukacs Jr.
Album was composed by Frank Klepacki and was released on January 23, 2016. Soundtrack consists of 64 tracks tracks with duration over . Album was released by Grey Box (distributed by Valve).
CD 1
| 1 | Grey Goo Main Theme | | |
| 2 | We Have A Breach | | |
| 3 | The Beta | | |
| 4 | We Were Ambushed | | |
| 5 | Battle Stations | | |
| 6 | Beta Formation | | |
| 7 | Are We Certain | | |
| 8 | On the Hunt | | |
| 9 | Crush Under Foot | | |
| 10 | Change Tactics | | |
| 11 | Base Expansion | | |
| 12 | Bring The Hailstorm | | |
| 13 | Go Through Them | | |
| 14 | Wall Defense | | |
| 15 | Skystrike | | |
| 16 | Preparing For Counter Assault | | |
| 17 | The Hand of Ruk | | |
| 18 | War Has Given You A Voice | | |
CD 2
| 1 | The Humans | | |
| 2 | Abandon Ship | | |
| 3 | Efficient Patrol | | |
| 4 | Analyze Hostile Forces | | |
| 5 | Advancing Position | | |
| 6 | Redgrave’s Location | | |
| 7 | Exploration | | |
| 8 | Assemble and Attack | | |
| 9 | Agile Maneuvers | | |
| 10 | Prisoner Negotiation | | |
| 11 | Increase Production | | |
| 12 | Human Confrontation | | |
| 13 | So That Others May Live | | |
| 14 | Materialize | | |
| 15 | Valiant Assault | | |
| 16 | Catalyst Detonation | | |
CD 3
| 1 | The Goo | | |
| 2 | System At Risk | | |
| 3 | Power Growing | | |
| 4 | Spreading | | |
| 5 | Acquire Data | | |
| 6 | Replicate | | |
| 7 | Protect and Destroy | | |
| 8 | The Pathfinder Program | | |
| 9 | Evolve | | |
| 10 | All Life is Hostile | | |
| 11 | Silence Is Growing | | |
| 12 | Emergent | | |
| 13 | A Greater Threat | | |
| 14 | Eliminate | | |
| 15 | Unified | | |
| 16 | War is Evolving | | |
CD 4
| 1 | The Shroud | | |
| 2 | Cultivation | | |
| 3 | Propagation | | |
| 4 | Vexation | | |
| 5 | Disruption | | |
| 6 | Exceed The Enemy | | |
| 7 | Exterminate | | |
| 8 | Flourish | | |
| 9 | All Will Be Silenced | | |
| 10 | Vexation (Metal Version) | | |
| 11 | Disruption (Metal Version) | | |
| 12 | Exceed The Enemy (Metal Version) | | |
| 13 | Exterminate (Metal Version) | | |
| 14 | All Will Be Silenced (Metal Version) | | |
