# Turbo Rumble audio

Downloaded 2026-10-21 from the authors' OpenGameArt pages and Kenney. All files are served locally; there are no runtime third-party requests.

| Shipped file                                 | Author / original                                                                                                                                                                                                                  | License                                                       | Changes                                                                                                                                                              |
| -------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `engine.wav`                                 | [domasx2 — Racing car engine sound loops](https://opengameart.org/content/racing-car-engine-sound-loops), [loop_0.wav](https://opengameart.org/sites/default/files/loop_0.wav)                                                     | CC0 1.0                                                       | Mono 32 kHz PCM; high/low-pass; level balanced; 35 ms wrap crossfade. Author confirms remaking the original from a public domain sample in the source page comments. |
| `tire-skid.wav`                              | **audible-edge (Tom Haigh), edited by qubodup — [Car tire squeal skid loop](https://opengameart.org/content/car-tire-squeal-skid-loop)**, [tires_squal_loop.wav](https://opengameart.org/sites/default/files/tires_squal_loop.wav) | **[CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)** | Mono 32 kHz PCM; band limiting, level balancing and 35 ms wrap crossfade. Credit, source, license and modification notice also appear on the in-game credits page.   |
| `pixel-sprinter.ogg` / `.mp3`                | [Zane Little Music — Pixel Sprinter](https://opengameart.org/content/pixel-sprinter), [looping OGG](https://opengameart.org/sites/default/files/pixel_sprinter_loop_0.ogg)                                                         | CC0 1.0                                                       | Original 34.285714-second OGG loop; MP3 128 kb/s compatibility copy. Playback gain is controlled separately from effects.                                            |
| `collision-heavy.wav`, `collision-light.wav` | [Kenney Impact Sounds](https://kenney.nl/assets/impact-sounds): `impactMetal_heavy_001`, `impactMetal_medium_002`                                                                                                                  | CC0 1.0                                                       | Mono 32 kHz PCM, trimmed/faded and level balanced. Original license in `impact-LICENSE.txt`.                                                                         |
| `explosion.wav`                              | [Kenney Sci-fi Sounds](https://kenney.nl/assets/sci-fi-sounds): `explosionCrunch_001` + `lowFrequency_explosion_000`                                                                                                               | CC0 1.0                                                       | Layered crunch and low-frequency tail; 1.7 seconds, faded and limited, mono 32 kHz.                                                                                  |
| `boost.wav`, `frost-shot.wav`, `pulse.wav`   | Kenney Sci-fi Sounds: `thrusterFire_000`, `laserLarge_000`, `forceField_001`                                                                                                                                                       | CC0 1.0                                                       | Trimmed/faded and level balanced; mono 32 kHz PCM. Original license in `scifi-LICENSE.txt`.                                                                          |

The CC0 dedication is included as `CC0-1.0.txt`; the tire recording's attribution license is `CC-BY-3.0.txt`. Do not remove the tire recording's attribution when redistributing the game. Optional credits to all artists are retained in `/credits`.

UI melodies and the emergency sound fallback use the game's original Web Audio synthesis. Real recordings are mixed with quiet synthesized low frequencies. Only the shared host screen plays the soundtrack; phones remain controllers.