NOCTURNE — original game music, arrangement and audio engine.
Landing piano: an excerpt from "Kolysanka dla umarlych" (cemetery/lullaby),
rendered from the original game score and edited into a looping passage.
Gameplay film: "Walc popiolu" (castle/ashwaltz) and "Niedokonczona przysiega"
(boss/oath), mixed with synchronized game effects.

Instrument samples: tonejs-instruments, Nicholas Brosowsky, CC BY 3.0.
https://github.com/nbrosowsky/tonejs-instruments
https://creativecommons.org/licenses/by/3.0/
Guitar: quartertone, ClassicalGuitar-multisampled.
https://freesound.org/people/quartertone/packs/11573/
Cello: flcellogrl, real cello notes.
https://freesound.org/people/flcellogrl/packs/12408/
Other instruments: VSCO 2 Community Edition / Versilian Studios, CC0.
Samples trimmed and processed by the game's original music engine.

Game sound effects: Kenney (Impact Sounds and RPG Audio), artisticdude
(RPG Sound Pack and Swishes), Fantozzi (Footsteps), rubberduck (100 CC0 SFX #2).
All sound-effect samples are CC0. Additional effects are synthesized by the game.