OUT OF ORDER! — Intro audio v0.34
Source/license pages checked 2026-10-13.

New effects use CC0 1.0. Attribution is optional under CC0; creators are credited here.
https://creativecommons.org/publicdomain/zero/1.0/
CC0 does not provide warranties about third-party rights.

Kenney — Digital Audio
https://kenney.nl/assets/digital-audio
Original pack already retained in the project's Sound Review sources.
tone1.ogg: repeated/trimmed into a two-second alarm.
twoTone1.ogg: low-level electronic tones in the entrance sound bed.

Kenney — Impact Sounds 1.0
https://kenney.nl/assets/impact-sounds
Original download: https://kenney.nl/media/pages/assets/impact-sounds/87b4ddecda-1677589768/kenney_impact-sounds.zip
impactMetal_light_000.ogg and impactMetal_light_001.ogg: alarm switch click,
tool clinks and one faint mechanical impact in the entrance mix.
footstep_concrete_000.ogg and footstep_concrete_001.ogg: alternating walking loop.

IENBA — Male Inhale And Sigh (850702), CC0
https://freesound.org/people/IENBA/sounds/850702/
Public player source: https://cdn.freesound.org/previews/850/850702_9616576-lq.mp3
Trimmed first breath phrase, up to 4.6 seconds; level adjustment and edge fades.
This uses the publicly accessible MP3, not the account-only original WAV.

schafferdavid — pinball-bumper hits.wav (450265), CC0
https://freesound.org/people/schafferdavid/sounds/450265/
Public player source: https://cdn.freesound.org/previews/450/450265_98337-lq.mp3
Existing Sound Review MP3 used for a quiet mechanical entrance bed with Kenney tones.
No crowd/real-arcade recording containing recognizable music was included.

All new effects are rendered to mono PCM WAV, 22050 Hz, with short edge fades.
File hashes and measured lengths are in provenance.json beside this file.
The intro's quiet bass bed reuses the user's existing bass-001.mp3 music selection;
it is NOT covered by the CC0 effect licenses above. Existing music provenance is unchanged.