I use GOG and would like to try out multiplayer.
Platform: PC
Game Mode: Normal and Creative
GOG ID: blackiris
I have set the game to allow anyone to join but have placed restrictions on what other players can do. Destruction of players or private property is not allowed. 
Bear with me if you join my game I have never played multiplayer online in any game.
I’ve tried a bit yesterday, was fun but we didn’t really play coop, but we did go to the same places. Found some gravitano balls.
GOG Id gunnar_g
It is very handy for helping each other out especially early in a new save. My son plays with 3 other people. They play Minecraft style, building together.
Happy Birthday @sheralmyst 
You are proclaimed Queen for the Day! 
Platform: PC
Game Mode: Normal
GOG ID: Tsal
I’m on GOG as well. Been sitting on the edge of center of the universe for about a year now. I’m not much of a multiplayer kind of guy, but I don’t mind company. If you see me online, pop on over and say hey.