Multiplayer games are one of the most in-demand skills in game development today. Mirror is a powerful networking library that makes it easier to build multiplayer systems in Unity.
Start by understanding the client-server architecture. The server is authoritative, while clients send input.
Use NetworkIdentity and NetworkBehaviour to synchronize objects. Commands and RPCs allow communication between client and server.
Optimization is critical. Send only necessary data and reduce network traffic.
Testing multiplayer locally and over the internet is also important.
Building multiplayer games is challenging but extremely rewarding, and it significantly increases your value as a developer.