Unity Networking Fundamentals

This guide teaches networking for Unity developers working in C#, moving from the underlying building blocks to complete multiplayer projects. Early chapters cover sockets, the differences between TCP and UDP, client-server design, and serialization, with attention to how each protocol performs and where each one falls short.

The second half turns to practical work. Readers pull data from remote services through RESTful APIs, build games that run across a local network, and create online multiplayer titles on a client-server model. Two projects anchor the material: a chat client and server that sits on top of a game, and a three-dimensional maze game supporting up to four players over a network. Along the way, the book explains network latency and client-side prediction, two concerns that shape how responsive a multiplayer game feels.

By the final chapter, readers should understand the protocols and architecture behind networked software and know how to structure a client-server multiplayer game. The book is written for people who already know Unity and C# and want to add multiplayer features to their projects.