Enclosed with the Collector's Edition of the game for Nintendo Switch (RNFG-0001).
Music by
Shinji Hosoe (1, 17, 18, 19, 21)
Teruo Taniguchi (2, 4, 5, 9, 10, 11, 13, 15, 16, 20)
Takahiro Eguchi (3, 6, 7, 8, 12, 14)
Album was composed by Shinji Hosoe / Takahiro Eguchi / Teruo Taniguchi and was released on October 24, 2019. Soundtrack consists of 21 tracks tracks with duration over . Album was released by Rainy Frog.
CD 1
| 1 | GIGA WRECKER Title Theme | | |
| 2 | Decadence | | |
| 3 | Factory | | |
| 4 | Bloodsteel General | | |
| 5 | Pressure | | |
| 6 | Ruins (City of Despair Version) | | |
| 7 | Fiend of Decadence | | |
| 8 | Laboratory | | |
| 9 | Seeking Sorceress | | |
| 10 | Anxiety | | |
| 11 | Destiny | | |
| 12 | Mine | | |
| 13 | Dragon of the Diamond Cave | | |
| 14 | Ruins | | |
| 15 | Sorrow | | |
| 16 | Rage | | |
| 17 | Fortress | | |
| 18 | Empress of Nymphs | | |
| 19 | Empress of Nymphs (Harsh Mistress Version) | | |
| 20 | The Silver Lining | | |
| 21 | GIGA WRECKER Ending Theme | | |
