In Northgard you have to choose a Clan. It works similar to Factions/Races in other RTS Games.
Each Clan has his own Starting bonus,
Fame bonus and a slightly differing Lore tree.
Starting and Fame Bonuses
Clan of the Wolf
Killing Wolves and Brown Bears provide Meat (20 for wolves, 140 for bears)
Military units eat 30% less food and provide happiness
200 Fame (Assault): Your military units gain 15% attack bonus when fighting outside your territory
500 Fame (Dominion): Your Berserker can colonize for free (with a cool down)
Clan of the Stag
Start with +75 Food, Wood and Kröwns
Hall of Skalds replaces Brewery and provides additional Fame
200 Fame (Supplies): Gain +150 Food, Wood and Kröwns, and +10 Stone
500 Fame (Dedication): Upgraded buildings gain additional 10% production bonus
Clan of the Goat
Start with 1 Sheep and can build the Sheepfold
Increases production of bonus of Feasts to 30%
200 Fame (Spare Tools): You gain 2 free tools to increase villagers' productivity
500 Fame (Team Work): Defense Towers and all Military units gain 20% resistance when feasting. You get 1 free Feast
Huginn and Muninn
Clan of the Raven
Can colonize with Kröwns rather than Food
Can build a Harbor (replaces Longship Dock) to explore coastal areas and later send mercenaries to attack
200 Fame (Recruits): Obtain +3 Villagers, 3 max population and +1 Happiness
500 Fame (Mercenaries): You can hire Mercenaries at your Harbor and send them to raid coastal areas
Clan of the Bear
Food and Wood penalties are reduced by 30%
Instead of having reduced power, your military units get 10% resistance bonus during Winter
Can summon Kaija, The Armored Bear at the Training Camp for 75 food (Cannot enter enemy territory)
200 Fame (Kindred Spirit): Having Kaija or a Shield Maiden in an area, increases local production by 15%
500 Fame (The Bear Awakens): You gain +3 Fame per enemy unit killed in an area with the Shield Maiden. Your Military units gain 1% power per 100 Fame
Clan of the Boar
Mender's Hut replaces Healer's Hut. Mender's produce +1 Lore while not healing
Each additional territory gives +2 max population
No Happiness penalties for non-upgraded houses
200 Fame (Heritage): 1 free Lore (doesn't count towards Lore Victory or Blessings)
500 Fame (Greater Blessings):
~Freya: Blizzard Penalty is hugely reduced (50%)
~ Baldr: +5 Happiness
~Jord: Warchief and upgraded tower get +10% Attack
Clan of the Snake
Age 15 (The Cunning): You start with your warchief, the young Signy.
Iron is not needed to summon Signy
The clan doesn't have access to Fame. Signy grows up, getting strong and unlocking new abilities instead.
Age 16 (Pride of the Clan): Signy gains 5% move speed and can now attack at range
Age 18 (Tears of the Earth): Signy can use Scorched Earth to burn any area during 3 months (3 month cooldown). Burned zone: -50% production, snakes units and buildings +50% attack.
Signy moves faster and can go through tiles with foes without engaging combat
Clan of the Dragon
Your civilians can go into neutral territory.
No Happiness or production penalty for being wounded.
You start with Sacrificial Pyre. You can build a Dragonkin Altar instead of other military camps
Start with 2 Thralls and only 3 Viliagers. You can buy thralls from your Longship Docks
200 Fame (Reluctant Workforce): Receive 5 Thralls. Your Dragon Essence gauge is extended, and bonuses are increased
500 Fame (Tenacious Grudge): +10% attack power against an opponent for each victory condition in which they are ahead of you (Commerce, Lore and Fame). Your Dragon Essence gauge is complete, and bonuses are increased
Note: More clans may be added after the official release of the game!