Games like Little Fiefdom: Medieval
Games like Little Fiefdom: Medieval include Mount & Blade II: Bannerlord, Graveyard Keeper, Totally Accurate Battle Simulator, Medieval Dynasty, and Crusader Kings III. We matched them by the tags players give Little Fiefdom: Medieval on Steam (Medieval, Building, War, Simulation, and Sandbox): closest matches first, and among equally close ones the better-known games.

Mount & Blade II: Bannerlord
Shared: Medieval · War · Sandbox

Graveyard Keeper
Shared: Simulation · Medieval · Sandbox

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · War

Medieval Dynasty
Shared: Building · Medieval · Sandbox

Crusader Kings III
Shared: Medieval · Simulation · RPG

Besiege
Shared: Simulation · Medieval · Sandbox

Potion Craft: Alchemist Simulator
Shared: Medieval · Simulation · Singleplayer

Garry's Mod
Shared: Sandbox · Building · Singleplayer

Stardew Valley
Shared: Simulation · RPG · Sandbox

Ultimate Epic Battle Simulator
Shared: Simulation · War · Sandbox

Space Engineers
Shared: Building · Sandbox · Simulation

Foundation
Shared: Medieval · Simulation · Sandbox

鬼谷八荒 Tale of Immortal
Shared: Simulation · Singleplayer · Sandbox

Kerbal Space Program
Shared: Simulation · Sandbox · Building

Banished
Shared: Simulation · Medieval · Singleplayer

Cities: Skylines
Shared: Building · Simulation · Sandbox

KINGDOMS
Shared: Medieval · Building · Sandbox

House Flipper
Shared: Simulation · Building · Singleplayer

Mount & Blade: Warband
Shared: Medieval · Sandbox · RPG

The Scroll of Taiwu : Beyond The Dome
Shared: Sandbox · RPG · Indie

Poly Bridge
Shared: Building · Simulation · Sandbox

The Sims™ 3
Shared: Building · Simulation · Sandbox

Crusader Kings II
Shared: Medieval · Simulation · Sandbox

Tavern Master
Shared: Building · Medieval · Simulation