# Sound effects: credits and licences

Every sound in Koi-Koi Online is a cue from the **“Zen” pack of [UI SFX](https://uisfx.com)**
([sound library](https://uisfx.com/#sound-library), [source](https://github.com/romainsimon/uisfx)), by
**Yuki Capital**. No audio file is shipped: the `uisfx` package (version 0.4.0, from npm) synthesises each cue in
the browser, with Web Audio, from the same deterministic recipes that render the pack's MP3 and Ogg files. This
folder holds only this notice.

Two licences apply, and both are reproduced in full below:

- **The sounds** (the “Zen” pack's audio) are dedicated to the public domain under the
  [Creative Commons CC0 1.0 Universal Public Domain Dedication](https://creativecommons.org/publicdomain/zero/1.0/)
  (CC0-1.0). Attribution is not required; it is given here gratefully.
- **The code** that plays them (the `uisfx` runtime, bundled into the app's JavaScript) is licensed under the
  **MIT licence**. Its copyright notice and permission notice must stay with copies of it: this file is that
  notice for the app's built files.

**Changes.** None to the sounds or the runtime. The app picks which of the pack's 78 cues sounds for each moment
(`src/lib/sound.ts`, and next to the code of each moment), and at what volume (Settings).

## MIT licence (the `uisfx` runtime)

```
MIT License

Copyright (c) 2026 Yuki Capital

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
```

## CC0 1.0 dedication (the sounds)

As shipped in the package (`LICENSE-AUDIO`):

```
The audio files under `sounds/` are dedicated to the public domain under the
Creative Commons CC0 1.0 Universal Public Domain Dedication.

You may copy, modify, distribute, and use these files, including commercially,
without asking permission. Attribution is appreciated but not required.

Legal code: https://creativecommons.org/publicdomain/zero/1.0/legalcode
SPDX identifier: CC0-1.0
```

The project's own `LICENSE-AUDIO` adds that, to the extent possible under law, Yuki Capital has waived all copyright
and related or neighbouring rights to the procedurally generated audio. The synthesised cues are the same sounds.
UI SFX and Yuki Capital do not endorse this game.