Northgard is an absolutely amazing strategy game which starts out casual and doesn't overwhelm players with truckloads of mechanics.
The game has been greatly evolved over time and provides players with plenty of different clans, challenging achievements, engaging story missions, Coop and PvP content, great workshop mod maps and so on.
The art style and overall atmosphere is charming and captures the ever so popular viking culture and norse mythology quite well.
It's highly re-playable with adjustable and easy to pick up sessions and with its ridiculous 2.5GB install size, there's no reason to ever uninstall this little gem :D