We have added some limited NPC's to the Beta game. These NPC's will roam the galaxy and that is about it right now. If you attack them they CAN attack you back or run away. We will be adding more functionality to them. Such as attacking on their own other players and planets. Upgrading their own ship and planets. Hunting down anyone that has attacked them. And lastly trading between ports. Give them a try.

It's very interesting !

Edit : But they can take the Artefacts too ? and use them ? that can be more interesting too

Nope, they can't take artifacts. They are kind of limited right now. They roam the galaxies and you can attack them and they can either attack or run. We will be adding more things to them such as attacking ships and planets on their own, trading, upgrading their ship and planets, placing sector defenses and other things. We are going to try and make them try and act like a player in the game. Maybe not the smartest player but a player anyway.