Which type of multiplayer networking does unity use?

Hello,
I have gone through “A simple introduction to multiplayer game” tutorial on official site of unity.I just wanted to know weather its lan based multiplayer or wan based? Also how can make a game like mini militia?
Thanks.

You can build local multiplayer as well as online multiplayer games using Unity’s multiplayer. You can read through the Multiplayer and Networking documentation section from Unity manual to get basic concepts cleared.

how can make a game like mini militia?
This is a very broad question and is out of the scope of Unity Answers. Read this page for details about what type of questions you can ask on Unity Answers.