Help to understand the network solution

[luke-unity]

AmongUs uses a P2P architecture over a relay server. A lot of networking solutions support this. Mirror does support it if you use a relay based transport. Photon Unity Networking uses a cloud based relay. Our new Netcode for GameObjects (formerly know as MLAPI) networking also supports this.

As for which one to chose when upgrading from UNet. The most similar is definitely Mirror which is a Fork of UNet but with a lot of improvements. Mirror has an upgrade guide to migrate from UNet which you can find here.

There are also other third party solutions around. For which one to chose I’d recommend these two resources:

What are the pros and cons of available network solutions/assets

[EDIT 04/04/23] WARNING: This list hasn’t been updated in a few years so a lot of information is missing and outdated. This is a simple list of the best solutions and assets and their pros and cons so that I (and others) can make the best choice for their multiplayer projects. Here’s a link to a similar google doc where you can get more information on some of the solutions listed here, and general networking terms: Here’s a spreadsheet with even more information. thanks @F-R-O-S-T-Y and @…

How to choose the right netcode for your game

Finally we at Unity are building our next netcode solution “Netcode for GameObjects”. It is still experimental currently but is our new official networking solution. We’ve created an upgrade guide for UNet as well but upgrading can sometimes be a bit tricky. If you decide to go with “Netcode for GameObjects” and run into any issues with upgrading, let me know.