Hello Games releases NEXT with multiplayer for everyone, including Steam, consoles and so on, but GOG users need to have "patience" because... it'll come. Yeah, sorry, but no release date tough, so this mean maybe next month, year, or never (of course). It's just like a lootbox, maybe you get something, maybe not, if you have the money, you can gamble. TBH I couldn't expect less from them, ever since their game's "successfully" launch. They need to screw up at something. And they did.