Games like Kingdom Wars 4
Games like Kingdom Wars 4 include Manor Lords, Crusader Kings III, Europa Universalis IV, Workers & Resources: Soviet Republic, and Stronghold: Definitive Edition. We matched them by the tags players give Kingdom Wars 4 on Steam (Strategy, Grand Strategy, RTS, City Builder, and Medieval): closest matches first, and among equally close ones the better-known games.

Manor Lords
Shared: Strategy · City Builder · Grand Strategy

Crusader Kings III
Shared: Strategy · Grand Strategy · Medieval

Europa Universalis IV
Shared: Strategy · Grand Strategy · Wargame

Workers & Resources: Soviet Republic
Shared: Strategy · City Builder · Grand Strategy

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

Against the Storm
Shared: Strategy · City Builder · Grand Strategy

Medieval Kingdom Wars
Shared: Grand Strategy · RTS · Strategy

Stronghold Crusader: Definitive Edition
Shared: Strategy · City Builder · Medieval

Crusader Kings II
Shared: Strategy · Grand Strategy · Medieval

Empires of the Undergrowth
Shared: Strategy · Grand Strategy · City Builder

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

Farthest Frontier
Shared: Strategy · City Builder · Medieval

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

Sid Meier's Civilization VII
Shared: Strategy · Grand Strategy · City Builder

Banished
Shared: Strategy · City Builder · Colony Sim

Stronghold HD (2012)
Shared: City Builder · Real Time Tactics · Medieval

Songs of Syx
Shared: Strategy · City Builder · Grand Strategy

Total War: WARHAMMER
Shared: Strategy · Grand Strategy · RTS

Norland
Shared: Strategy · City Builder · Grand Strategy

Foundation
Shared: Strategy · City Builder · Medieval

Hearts of Iron IV
Shared: Strategy · Grand Strategy · RTS

Total War: MEDIEVAL II – Definitive Edition
Shared: Strategy · Grand Strategy · Medieval

Knights of Honor II: Sovereign
Shared: Strategy · Grand Strategy · RTS

Total War: THREE KINGDOMS
Shared: Strategy · Grand Strategy · RTS