Once the invasion is launched make sure you occupy the top county in all counties in the petty kingdom of Wessex. This part of England is the strongest so make sure you have enough troops for it and don't launch it too early. You can either take the petty kingdom of Mercia, the petty kingdom of Brittany or the petty kingdom of Wessex. Soon a message will pop up giving you the option to pick between 3 prepared invasions. At the start it doesn't look to good but don't worry. Ok so you've decided to take the easy route? Yes the easy route. This means you have to use assassins to kill off all but 1 son which is risky business

Without reformation, Gavelkind is the only succession law available to you unless Norse is reformed or you convert to Christianity.

The disadvantages of the Norse in 867 are:

Quick expansion from your native lands can quickly allow you to create the Empire of Scandinavia.

Norse raiders can travel throughout the river system.

Invasion CB allows you to take over the kingdom that your primary title resides in.

So the advantages of the Norse in 867 are: This guide will also utilize the kingdom you form first along with the kingdom of Finland title (which is a extremely weak kingdom anyhow and it doesn't matter if you give it away later) to create the empire of Scandinavia. They will eventually blur into each other but the start for each is unique. The petty kingdom of Jylland, The petty kingdom of Sjaelland, The petty kingdom of Svitjod and lastly the petty kingdom of Ostlandet.

Ok so you've decided you wanna play as a viking and conquer the world? Well this guide will focus on the start of 1 of 4 different Norse petty kingdoms.

Ck2 how to get claims on kingdoms