Really neat strategy card game. To improve the game I think all you need to do is add more feedback to the player. Instead of just saying an attempted conquest is a failure, explain why said conquest failed, otherwise it just feels a bit random. The writing on the card itself is unreadable, which is fine because you put the text in another place. Maybe you should have just had the text in that other place, and showed it when the player hovered over it. It's clear you put a lot of work into the research for this game, I even learned about some Viking history I had no idea about. Congrats on finishing.

Clearly well researched, and I loved that atmospheric music. This plays like a blend of board game strategy and puzzle headspace. 28 turns might be a little long, but the ambition of catching the full swathe of an era has a lot of merit. Working out our grey cells this one. 

Very cool concept!  It was a little confusing figure out but a neat strategy game overall!