Music
Nuclear Throne's soundtrack has a total of 35 unique tracks mainly for every area/boss. These were all composed by Jukio Kallio who has repeatedly worked on Vlambeer projects amongst other things, all listed on his website.
Any music in-game can be easily replaced on PC versions using the music editing guide.
There are multiple obscure themes in the game that only play under certain conditions. Many of these are known as B-Themes which has some conditions to make it infrequently heard;
B-Theme Tech
B-Themes are alternative themes that play in place of normal themes if certain conditions are met.
Any area that has a Vault Statue on its second level has a chance to use B-Themes. This includes Scrapyards and Frozen City in preloop, and also includes Desert and Palace in loop. Upon entering those areas there is always a 5% chance for their respective B-Theme to play, or is guaranteed to play if at 1 HP. (Or at 0 HP, during those rare circumstances).
Once 3 vaults are visited in a run they will no longer spawn, meaning that B-Themes no longer have a chance to play. Palace B-Theme is absurdly rare as a result of this.
As weekly runs spawn vaults in their destroyed state, B-Themes have a chance to play throughout the entire run.
This table is sortable! Click any header to sort it by its grouping.
| OST Title | OST Length | File Name | File Length | Category | Plays At |
| Legend of the Throne | 2:07 | musThemeA musThemeB |
0:48 1:25 |
Main Menu | Normal Menu Themes |
| Fläshyn | 1:27 | mus1 | 1:08 | Normal Area | The Desert |
| Biggest Bandit | 1:30 | musBoss1 | 1:07 | Boss Theme | Big Bandit |
| Groundwork of the Past | 2:17 | mus2 | 1:36 | Normal Area | The Sewers |
| Mt. Rubble | 1:35 | mus3 | 1:12 | Normal Area | The Scrapyards |
| Dogs | 1:34 | musBoss2 | 1:13 | Boss Theme | Big Dog |
| After Bloodshed | 1:03 | musBossDead | 1:04 | Boss Defeat | Defeating Any Boss (Besides Thrones) |
| Crystallized Fear | 2:21 | mus4 | 1:49 | Normal Area | The Crystal Caves |
| Frozen City | 2:37 | mus5 | 2:18 | Normal Area | Frozen City |
| The One They Left Behind | 1:28 | musBoss3 | 1:08 | Boss Theme | Lil Hunter |
| Where They Were Changed | 1:59 | mus6 | 1:52 | Normal Area | The Labs |
| Place of Power | 2:34 | mus7 | 2:22 | Normal Area | The Palace |
| Nuclear Throne | 2:09 | musBoss4A | 1:40 | Boss Theme | The Nuclear Throne |
| This Is It | 1:21 | musBoss4B | 1:07 | Boss Theme | Throne II |
| Beyond the Portal | 2:35 | mus106 | 2:12 | Secret Area | IDPD HQ |
| Captain | 1:36 | musBoss8 | 1:22 | Boss Theme | Captain |
| Kings and Queens of Wasteland | 4:30 | musCredits | 4:30 | Credits | End Credits |
| Campfire | 1:02 | musThemeP | 1:03 | Main Menu | Easter Egg |
| A Way | 2:25 | mus1b | 2:03 | B-Theme | The Desert |
| Lament of a Mother | 1:29 | musBoss5 | 1:16 | Boss Theme | Mom |
| Secret Entrance | 1:51 | mus3b | 1:22 | B-Theme | Scrapyards |
| Mind Killer | 1:49 | musBoss6 | 1:36 | Boss Theme | Hyper Crystal |
| Vault | 1:32 | mus100 | 0:54 | Secret Area | Crown Vault |
| Guardians of the Crown | 1:46 | mus100b | 1:16 | Secret Area | Crown Guardians |
| Ode | 2:09 | mus5b | 1:51 | B-Theme | Frozen City |
| Machine God | 1:37 | musBoss7 | 1:18 | Boss Theme | Technomancer |
| Come so Far | 1:59 | mus7b | 1:59 | B-Theme | Palace |
| The Place I Once Called Home | 1:22 | mus106b | 1:13 | Secret Area | IDPD HQ as Rogue |
| Cursed Killer | 1:50 | musBoss6B | 1:36 | Boss Theme | Cursed Hyper Crystal |
| Under Water | 2:18 | mus101 | 2:03 | Secret Area | Oasis |
| What's That Smell | 1:37 | mus102 | 1:30 | Secret Area | Pizza Sewers |
| Venus Mansion | 2:48 | mus103 | 2:42 | Secret Area | YV's Mansion |
| Is This Happening | 2:28 | mus104 | 2:02 | Secret Area | Cursed Crystal Caves |
| So Green | 2:13 | mus105 | 1:58 | Secret Area | Jungle |
| Where The Guns At | 2:20 | mus107 | 0:42 | Secret Area | YV's Crib |