Earlier quoted context omitted.
Northgard requires Galaxy for single-player content. It's not subtle about it. Your response says more about what you can tell with a quick google search than anything else. I'm fascinated that I've been complaining about this here on HN for months, and the only response I ever get -- which comes up every time -- is "what are you talking about, that's not true". This isn't a matter of opinion. It's not even difficult…
When checking Northgard, Galaxy seems to be required for "online content". So it at least seems right that Galaxy is not optional for some stuff. However, I haven't found any evidence that Galaxy is required for single player. In fact, I found evidence to the contrary: the game has a Linux version, where Galaxy is not available.
Here's a prominent forum thread in the Northgard forum on GoG: https://www.gog.com/forum/northgard/warning_gog_galaxy_is_re...
Note that title: "Warning: GOG Galaxy is required to use conquest mode."
Conquest mode is a single-player mode. In fact, it's the only mode that allows you to use any of the Northgard DLC content. Without running Galaxy, all you can do is run through the story campaign.
What is your mental model of my commenting here? I posted a rant complaining about deluded people contradicting the basic facts every time I bring this up, and that's the comment you responded to in order to... demonstrate an example? Did you really think I was just making it all up?