Selected source recordings, CC0 1.0:
AntumDeluge — Undead Moans; Witch Cackle
https://opengameart.org/content/undead-moans
https://opengameart.org/content/witch-cackle
AntumDeluge / polymorpheva — Bat Screeches
https://opengameart.org/content/bat-screeches
Kerzoven — Cat Purr & Meow (cat_softmew.wav)
https://opengameart.org/content/cat-purr-meow
Wolfgang_ / Ted Kerr — Crickets Ambient Noise - loopable
https://opengameart.org/content/crickets-ambient-noise-loopable
rubberduck — 100 CC0 SFX #2 (thunder_01)
https://opengameart.org/content/100-cc0-sfx-2
License: https://creativecommons.org/publicdomain/zero/1.0/

Edited, filtered, faded and converted offline. Original suspense string-cluster
and wing-flutter synthesis by this project; see tools/build_scene_audio.py.
No film music or Hitchcock soundtrack recording is included.

Original metallic gate-hinge creak synthesized by this project;
see tools/build_gate_audio.py (seed 6174). No source recording is used.

Original light howling storm wind and restrained dry-leaf rustle synthesized by this project;
see tools/build_wind_audio.py (seed6179). No source recording is used.

Original light rain synthesized by this project;
see tools/build_rain_audio.py (seed6181). No source recording is used.