Reactor 1.0 is available today.
We have been running Reactor in production since 2017. The first game it powered was kazap.io, a browser-based multiplayer brawler we built ourselves to test the engine and study the economics of web games. It is still running.
In 2019, we partnered with modd.io to build Braains2. The sequel to the popular browser game braains.io, Braains2 pushed 100 players into the same server at 30 Hz with 150 physics objects. Total bandwidth was 35 kbps per server. The original game ran at 300. Reactor’s compression is what made that possible.
Scene Fusion, our real-time collaboration tool for Unity, also runs on Reactor. The same synchronization system that handles multiplayer physics in a live game handles multi-user scene edits in the editor.
We spent the years since those launches refining the API, hardening the tooling, and closing the gaps that come up when you move from internal use to something you hand to other teams. We are proud to make it available to everyone.
If you are building a multiplayer game, get started for free.