ArcOfDream composed an amazing chiptune soundtrack to jam out to while playing, from the jaunty level themes to the intense boss music.
Unmarked spoilers ahead!
- "Thought Soup"
, a comfy and pleasant song, is perfect for chilling out with Kleines and the various friendly monsters you meet. - "Tonal Dissonance" is an unexpectedly cheerful and fun song that plays for the first level in the game, fittingly for the name.
- "Gone Fishing" plays when the game starts pulling off the kid gloves, and it's appropriately more intense.
- "Point Zero" is an equal parts somber and hopeful song, fitting for the last stage in the game before floor 6.
- "No Tomorrow" is a climactic and foreboding song that plays after you've crossed the threshold into floor 6, really emphasizing that you're in the Forbidden Zone.
- "Against All Odds" takes the place of "Tonal Dissonance" on floor 1 on hard mode, and as a more serious and forceful counterpart, it sets the scene that the game's going to be a lot more challenging from here on.
- "Dark Abyss" mashes several other themes into one that fits the pseudo-Minus World that is Nowhere.
- "Accursed One" is an epic tune that you'll find yourself familiar with given that it's the theme of the Wake-Up Call Boss, and it's sure to get you pumped up for the fight.
- "Chaos Incarnate" is an especially intense theme played when fighting an immensely powerful God of Chaos that is only reached after defeating the Tier-4 Warden.
- "Ex Machina" is a dramatic three-part song played against the Climax Boss that starts off with a menacing sequence of notes, and gradually grows in intensity until it culminates in the chiptune equivalent of a One-Woman Wail.
- "Monolith" is an appropriately hype theme for the final challenge of the main game, and for those with a keen ear is a remix of the song in the tutorial fight, fitting the battle it accompanies.
- "End of Monolith" plays during the last two phases of the forementioned True Final Boss, and is a lot sadder given the fight's context.
- "Obscura Machina" and "Second Movement" play when fighting the Machine prior to Null's arrival. Though they're not as bombastic as the last part of Ex Machina, such fits the sheer toughness of the Power Eternal's guardian.
- "Solace" is a relaxing, ethereal tune that allows the player's victories against main bosses of floors 5 and above to sink in.
- "Keygenitor" is an engaging soundtrack played at arcades and the hub when the Rad Sentinel is around to host the endless hacking minigame.
- "Ruin" is a foreboding track that plays at a variety of fitting places, such as life shops and shrines.
- "Towering Blues" is a melancholic and surprisingly emotional song that plays during the pause screen in the third and fourth floors.
- "Second Dive" is a refreshing and exciting theme that plays in the Relics of the Past main menu — fitting as the game's content has been doubled, and then some.
