Audio credits & licenses
Quantum Quest uses pre-generated synthetic narration. The English voice is AI-generated; it is not a recording of a human narrator.
English narration
Kokoro-82M v1.0 — voice: af_heart
Model by hexgrad / rzvzn, based on StyleTTS 2 by Li et al. ONNX conversion by ONNX Community. Generated locally with Kokoro.js 1.2.1 and kokoro-onnx 0.6.1 (including the interactive tutorial), then normalized and encoded as MP3 for Quantum Quest.
The model and Kokoro code are provided under the Apache License 2.0, which permits commercial use and distribution subject to its terms. This site distributes generated narration, not the model weights or synthesis software. The model license does not license Quantum Quest’s card artwork, scripts or other materials.
- Original model, license and acknowledgements
- Official voice list
- ONNX model and license
- Kokoro source code
Upstream training-data acknowledgements, as listed by the model author: Koniwa (tnc), CC BY 3.0; and SIWIS, CC BY 4.0. These recordings are not included as audio clips in the game. No endorsement by the model or dataset creators is implied.
Japanese narration
VOICEVOX:四国めたん / VOICEVOX:玄野武宏
Japanese narration remains subject to the VOICEVOX software and individual voice-library terms. Commercial and noncommercial use is permitted under those terms, with the required credits. Anyone reusing or redistributing these Japanese audio files must retain the applicable voice credit and comply with the linked terms, including the same obligations for further recipients.
日本語での案内
英語ナレーションは、Apache License 2.0で公開されているKokoro-82M v1.0の標準音声 af_heart で制作した合成音声です。音声モデル・生成用ソフトウェアの配布は行っていません。出典、モデルのライセンス本文、上流の謝辞を上記に掲載しています。カード画像や台本にApache License 2.0が適用されるという意味ではありません。
日本語ナレーションのクレジットは「VOICEVOX:四国めたん / VOICEVOX:玄野武宏」です。音声を再利用・再配布する場合は、各音源のクレジットを保持し、VOICEVOXと各音源の利用規約を遵守してください。再配布先にも同じ条件の遵守を義務付けてください。
Sources and terms reviewed: 23 October 2026.