Choosing a networking framework for a Unity multiplayer game is one of the most consequential technical decisions you will make. It affects architecture, server costs, latency, cheat prevention, and (critically) how painful the next 12 months of development will be.
At Ocean View Games, we have shipped multiplayer projects using FishNet and have evaluated Mirror and Photon in depth. Our network engineering work on Domi Online (a server-authoritative MMORPG serving a global player base) gave us extensive hands-on experience with the real-world tradeoffs.
This post is the comparison we wished existed when we started.
The Three Contenders
FishNet
