IRONFALL — audio credits

Instrument samples (music):
  FluidR3 GM SoundFont by Frank Wen, rendered to MP3 by Benjamin Gleitzman (midi-js-soundfonts).
  License: Creative Commons Attribution 3.0 — https://creativecommons.org/licenses/by/3.0/
  Source: https://github.com/gleitz/midi-js-soundfonts
  Used: string ensemble, french horn, brass section, choir, pizzicato strings, orchestral harp,
        timpani, contrabass, taiko drum, synth bass, sawtooth lead (re-encoded to mono MP3).

Sound effects (CC0, public domain):
  Kenney — "Sci-Fi Sounds" and "Impact Sounds" (https://kenney.nl)
  OpenGameArt.org — "25 CC0 bang / firework SFX" and "100 CC0 SFX" (rubberduck),
                    "Cannon fire", "Cannon hit" (CC0)
  Trimmed, normalised and re-encoded to mono MP3 for the game.