Mirror is a high level Networking API for Unity, built on top of the low level Telepathy library.

Mirror is built and tested for MMO Scale Networking by the developers of uMMORPG, uSurvival and Cubica.

Mirror is optimized for ease of use and probability of success. Projects that use Mirror are small, concise and maintainable. uMMORPG was possible with <6000 lines of code. We needed a networking library that allows us to launch our games, period.

With Mirror, the Server & Client are ONE project (hence the name). Instead of having one code base for the server and one for the client, we simply use the same code for both of them.

• [Server] / [Client] tags can be used for the server-only and client-only parts.
• [Command] are used for Client->Server, and [ClientRpc] / [TargetRpc] for Server->Client communication.
• [SyncVar]s and SyncLists are used to automatically synchronize state.

What previously required 10.000 lines of code, now takes 1.000 lines of code. Therein lies the magic of Mirror.

Note: Mirror is based on Unity's abandoned UNET Networking system. We fixed it up and pushed it to MMO Scale.

Documentation

Check out our Documentation.

If you are migrating from UNET, then please check out our Migration Guide. Don't panic, it's very easy and won't take more than 5 minutes.

Installation

We recommend to download the most stable Mirror version from the Asset Store!

For the latest improvements, Download Mirror directly from this repository and extract it in your Assets folder.

Examples

We included several smaller example projects in Mirror.

For a fully polished, complete project example, consider uMMORPG or uSurvival.

Community Transports

Mirror supports many different low level networking transports:

• (built in) https://github.com/vis2k/Telepathy (Telepathy)
• (built in) Websockets
• (built in) Unity's LLAPI
• https://github.com/Raystorms/FizzySteamyMirror/ (SteamNetwork)
• https://github.com/SoftwareGuy/Ignorance/ (ENet)
• https://github.com/MichalPetryka/LiteNetLib4Mirror (LiteNetLib)

Donations

Mirror is developed by volunteers. If you like what we are doing, consider leaving a small donation.

Benchmarks

• Telepathy 1000 connections test
• uMMORPG 480 CCU worst case test (everyone broadcasting to everyone else)
• uSurvival 122 CCU worst case test

Contributing

If you would like to contribute, feel free to submit pull requests and visit our Discord Server.

We follow the KISS principle, so make sure that your Pull Requests contain no magic.

We need Mirror to be MMO Scale. Bug fixes are always highly appreciated. New features will be considered very carefully.