The full IRON NEST soundtrack is available on the developers' official YouTube channel, uploaded as a complete OST rather than as individual tracks. There is also an itch.io page hosting it.
Who wrote it
This is the part worth reading, and it is not in any other guide. The initial music scores were written by Nick's wife, a pianist and professor of music. From those scores, the team worked with a digital composer and a mastering artist to produce the final versions, with Dominik contributing significant feedback and direction throughout.
That is an unusual pipeline for a game soundtrack. Most indie scores are commissioned from a composer working to a brief; this one started inside the family of a two-person studio and was developed outward, which goes some way to explaining why the music sits so specifically against the game's dieselpunk interior rather than sounding like a licensed military-sim library.
Why the music matters more here than usual
IRON NEST puts you in one room for the entire runtime. There is no changing scenery, no exterior view, no travelling between locations — the visual environment is fixed from the first mission to the fifteenth.
That places an unusual load on the audio. The score and the ambient machinery are doing the work that environment art does in most games, which is why players notice the music enough to go looking for it. Searching for a game's OST is normally a sign of a standout track; here it is partly a consequence of the design.
Where to listen
- Official YouTube channel — the full OST is posted there, alongside the launch and demo trailers
- itch.io — a separate OST page exists
Whether a paid soundtrack DLC exists on Steam is unconfirmed. No verified information on a Steam OST listing or a purchasable edition has been confirmed here.
Track names and the full track list are also unconfirmed. This page deliberately does not reproduce a track listing, because an incorrect one would be worse than none.
Changing the music in-game
There is a record player in the cockpit, and a Nexus mod called Custom Records replaces its tracks with your own audio. It is purely cosmetic and changes nothing mechanical.
Like every IRON NEST mod, it needs a loader — BepInEx Bleeding Edge or MelonLoader — installed first. See the mods page for the full picture, including which loader to pick.
Whether the original in-game record player tracks are the same recordings as the released OST is unconfirmed.
Composer credit
The soundtrack was a collaboration rather than a single credited composer, based on the description above: initial scores from a pianist and professor of music, then a digital composer and mastering artist for the final versions, with the developers directing.
Unconfirmed — this site has not confirmed the individual names of the digital composer or the mastering artist, and does not have a verified formal credit list. The account above comes from a developer explanation on the Steam discussion boards.
Where the details came from
A Steam discussion thread titled "Who composed the music?" carries the developers' own explanation of how the score was made, and it is the source for the pipeline described here. Other threads on the boards cover music suggestions and identifying specific tracks players have heard in-game.
If a formal soundtrack release, a credit list or track names are published later, the Steam news hub and the official Discord will carry it before any wiki does.