Sample-based audio sources, accessed 2026-09-06
All sources below are CC0. Original clips were trimmed, normalized, mixed and encoded for this game. Engine and siren loop boundaries were crossfaded.

Engine idle: Motorbike Idling.wav, lmbubec
https://freesound.org/people/lmbubec/sounds/119455/
Source preview: https://cdn.freesound.org/previews/119/119455_1990688-hq.mp3

Engine cruise / acceleration: Motorcycle Accelerate and Cruise 28-sec, brucehep
Recorded from a BMW F800GSA exhaust.
https://freesound.org/people/brucehep/sounds/724078/
Source preview: https://cdn.freesound.org/previews/724/724078_5796720-hq.mp3

Human pain reactions: Male Grunts, Kodack
https://freesound.org/people/Kodack/sounds/256603/
Source preview: https://cdn.freesound.org/previews/256/256603_2276808-hq.mp3

Siren: Wax_vibe
https://freesound.org/people/Wax_vibe/sounds/546326/
Source preview: https://cdn.freesound.org/previews/546/546326_12197619-hq.mp3

Impacts and cloth: Kenney, Impact Sounds
https://kenney.nl/assets/impact-sounds
impactPunch_heavy_000/001/002, impactMetal_medium_000/002, impactSoft_medium_000, impactPlate_light_000
License retained in kenney-impact-CC0.txt.

CC0: https://creativecommons.org/publicdomain/zero/1.0/