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I blame "The Banner Saga" and "Lilyhammer" for my current Norse obsession, and the Viking Conquest DLC might just be the prescription needed, which is why I would like to know if it will be cross-platform. The system requirements show only windows specs at the moment.
I'm wondering the same thing myself; though since NW DLC came out for linux I would think this DLC would be too. Really hoping nevertheless!

Also hope that Bannerlord 2 comes out for linux as well..