Available as a DLC for owners of the game on Steam.
Album was composed by Angel Polanco and was released on March 01, 2018. Soundtrack consists of 38 tracks tracks with duration over more than hour. Album was released by The Hidden Levels, Valve.
CD 1
| 1 | Blank Melody | 01:59 | |
| 2 | Subterranean Pulse | 01:40 | |
| 3 | Shambled Paradox | 02:30 | |
| 4 | Her Adamant Will | 02:19 | |
| 5 | Mutual Exclusion | 02:05 | |
| 6 | Defense Mechanism | 02:12 | |
| 7 | My Heart Is See Through | 02:41 | |
| 8 | The Void Rains Down Upon You | 02:26 | |
| 9 | Distant Observer | 01:26 | |
| 10 | Warning Signs | 00:49 | |
| 11 | Nihility | 00:52 | |
| 12 | Trypophobia | 02:31 | |
| 13 | Guardian Angel | 02:45 | |
| 14 | Theoretically Beautiful | 02:32 | |
| 15 | Towering Anxiety | 02:35 | |
| 16 | Stained Glass Battle Dance | 02:56 | |
| 17 | Alone in the Dark | 02:10 | |
| 18 | Willpower | 01:14 | |
| 19 | A Strange Place | 01:56 | |
| 20 | Fever Dream | 02:34 | |
| 21 | Monster Birthday | 02:08 | |
| 22 | Uneasy Feeling | 01:30 | |
| 23 | Impending Doom | 02:33 | |
| 24 | Lonely Respite | 01:22 | |
| 25 | Long Distance | 01:34 | |
| 26 | Lucid Dissonance | 03:07 | |
| 27 | Anxious Protocol | 02:04 | |
| 28 | Transdimensional Sibling | 01:22 | |
| 29 | Happy Place | 01:58 | |
| 30 | Arrhythmia | 01:58 | |
| 31 | Little Imperfection | 01:56 | |
| 32 | Absolute Zero | 03:04 | |
| 33 | Less Than Zero | 01:28 | |
| 34 | Negative Matter | 02:08 | |
| 35 | An End | 00:51 | |
| 36 | Me, Myself, and Eye | 02:46 | |
| 37 | Random Encounter | 00:12 | |
| 38 | New Chapter | 00:12 | |
