Building a Web-Unity WebGL Bridge: A Practical Guide

When you’re building games that need both the power of Unity’s 3D engine and the flexibility of modern web technologies, you quickly discover that making them communicate isn’t as straightforward as it seems. After building several hybrid web-Unity applications, I’ve learned quite a few lessons about what works, what doesn’t, and what will make you want to throw your keyboard out the window.

While the well-established React Unity WebGL library already does a great job, this guide walks you through building a robust communication bridge from scratch between a TypeScript/JavaScript web frontend and Unity WebGL builds. I’ll share the architecture we settled on, the mistakes we made along the way, and the solutions we found.

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