Overtone – Realistic AI Offline Text to Speech (TTS)


Overtone is an offline Text-to-Speech asset for Unity. Enrich your game with 20+ languages, 900+ English voices, rapid performance, and cross-platform support.


by LeastSquares LLC


★★★★ star rating
Price History +

New Feature: Save the audio as WAV files!


Introducing Overtone, a cutting-edge offline Text-to-Speech (TTS) asset for Unity. With Overtone, you can effortlessly add realistic AI-generated voices to your games, bringing your characters to life and enhancing the overall gaming experience.



Documentation | Support | Discord



Key Features:


  • 🌍 20+ Languages: Overtone supports voices in 20+ different languages, opening your game to a global audience.

  • 🔊 900+ English Voices: Choose from a vast selection of over 900 unique English voices, giving your characters unparalleled diversity and authenticity.

  • 📴 Fully Offline: Overtone operates entirely offline on Android, Oculus, Windows, Linux, macOS, and iOS platforms, providing seamless TTS functionality without the need for an internet connection. Overtone does not use any native TTS system, allowing it to run in resource constrained paltforms like Oculus.

  • âš¡ Fast Performance: Developed in C++, Overtone delivers top-tier performance, ensuring smooth, high-quality audio playback even in the most demanding gaming scenarios.

  • 🎮 Cross-Platform: Overtone is compatible with all major platforms except WebGL, making it a versatile addition to your game development toolbox.

Upgrade your gaming experience with Overtone's advanced, offline Text-to-Speech capabilities. Incorporate Overtone into your project today and take your game to the next level.



For any questions or concerns, our dedicated support team is always ready to help at help@leastsquares.io or on Discord.