Games like Northern Kingdoms
Games like Northern Kingdoms include Farthest Frontier, Kingdoms and Castles, Frostpunk, Manor Lords, and Prison Architect. We matched them by the tags players give Northern Kingdoms on Steam (Strategy, City Builder, Colony Sim, RTS, and Immersive Sim): closest matches first, and among equally close ones the better-known games.

Farthest Frontier
Shared: City Builder · Strategy · Building

Kingdoms and Castles
Shared: City Builder · Colony Sim · Strategy

Frostpunk
Shared: City Builder · Strategy · Colony Sim

Manor Lords
Shared: Strategy · City Builder · Colony Sim

Prison Architect
Shared: Strategy · Colony Sim · City Builder

Banished
Shared: City Builder · Strategy · Colony Sim

They Are Billions
Shared: Strategy · Colony Sim · RTS

Cities: Skylines
Shared: City Builder · Strategy · Building

Kingdoms Reborn
Shared: City Builder · Colony Sim · Strategy

Becastled
Shared: Strategy · City Builder · RTS

Foundation
Shared: City Builder · Strategy · Building

Ostriv
Shared: Strategy · City Builder · Colony Sim

Stronghold: Definitive Edition
Shared: Strategy · City Builder · RTS

Pioneers of Pagonia
Shared: Strategy · Colony Sim · City Builder

Workers & Resources: Soviet Republic
Shared: Strategy · City Builder · Colony Sim

Songs of Syx
Shared: City Builder · Strategy · Colony Sim

Against the Storm
Shared: Strategy · City Builder · Colony Sim

Stronghold Crusader: Definitive Edition
Shared: Strategy · City Builder · Colony Sim

Infection Free Zone
Shared: City Builder · Strategy · RTS

Stronghold Crusader HD (2012)
Shared: City Builder · Colony Sim · Strategy

Settlement Survival
Shared: City Builder · Colony Sim · Building

Going Medieval
Shared: Strategy · Colony Sim · City Builder

Dwarf Fortress
Shared: Colony Sim · Strategy · City Builder

Empires of the Undergrowth
Shared: Strategy · City Builder · Colony Sim