No source code — UT99 multiplayer in the browser

Unreal Tournament is a cult classic shooter from 1999 that became a benchmark for the genre.

In 2017, a browser version of UT99 appeared — but only as a WASM binary, without source code. For years, running a fully functional multiplayer version in the browser remained out of reach.

Why this talk is worth attending:

• A real project: a full UT99 port with no simplifications
• A finished result, not an experiment
• Built without support from the original authors
• A breakdown of all technical aspects

We’ll walk through how this was achieved. The talk will be useful for developers working with WebAssembly and networking code.