Games like Citadels
Games like Citadels include Foundation, Farthest Frontier, Age of Empires II (Retired), Mount & Blade II: Bannerlord, and Banished. We matched them by the tags players give Citadels on Steam (Strategy, Action, Medieval, RTS, and Simulation): closest matches first, and among equally close ones the better-known games.
Foundation
Shared: Strategy · Medieval · Simulation
Farthest Frontier
Shared: Strategy · Building · Medieval
Age of Empires II (Retired)
Shared: Strategy · Medieval · RTS
Mount & Blade II: Bannerlord
Shared: Strategy · Medieval · Action
Banished
Shared: Strategy · Simulation · Medieval
Cities: Skylines
Shared: Strategy · Simulation · Building
Tavern Master
Shared: Medieval · Simulation · Strategy
Thronefall
Shared: Strategy · Medieval · Action
Kingdom Two Crowns
Shared: Strategy · Building · Medieval
Stronghold Crusader 2
Shared: Strategy · Medieval · RTS
Manor Lords
Shared: Strategy · Simulation · Building
Kingdoms and Castles
Shared: Strategy · Simulation · Resource Management
Frostpunk
Shared: Strategy · Resource Management · City Builder
Anno 1800
Shared: Strategy · Simulation · RTS
Jurassic World Evolution
Shared: Strategy · Building · Simulation
Stronghold: Definitive Edition
Shared: Strategy · Medieval · RTS
Against the Storm
Shared: Strategy · Simulation · Building
Becastled
Shared: Strategy · Medieval · RTS
Stronghold 3 Gold
Shared: Strategy · Medieval · RTS
They Are Billions
Shared: Strategy · RTS · Building
Anno 2070™
Shared: Strategy · Simulation · RTS
Life is Feudal: Forest Village
Shared: Strategy · Medieval · Simulation
Mindustry
Shared: Strategy · RTS · Resource Management
Diplomacy is Not an Option
Shared: Medieval · Resource Management · RTS