Games like Petit Royaume
Games like Petit Royaume include Townscaper, SUMMERHOUSE, Tiny Glade, My Dream Setup, and ISLANDERS. We matched them by the tags players give Petit Royaume on Steam (Minimalist, Relaxing, Casual, City Builder, and Sandbox): closest matches first, and among equally close ones the better-known games.

Townscaper
Shared: Relaxing · City Builder · Sandbox

SUMMERHOUSE
Shared: Relaxing · Sandbox · Casual

Tiny Glade
Shared: Relaxing · Building · Sandbox

My Dream Setup
Shared: Relaxing · Casual · Building

ISLANDERS
Shared: Relaxing · City Builder · Minimalist

Gourdlets
Shared: Relaxing · City Builder · Sandbox

Stardew Valley
Shared: Relaxing · Pixel Graphics · Sandbox

Town to City
Shared: City Builder · Relaxing · Building

Dorfromantik
Shared: Relaxing · Casual · City Builder

Hozy
Shared: Relaxing · Casual · Sandbox

Pile Up!
Shared: Relaxing · Casual · Minimalist

Cities: Skylines II
Shared: City Builder · Sandbox · Building

Pan'orama
Shared: Relaxing · City Builder · Minimalist

Littlewood
Shared: City Builder · Relaxing · Pixel Graphics

Foundation
Shared: City Builder · Sandbox · Relaxing

Two Point Museum
Shared: Casual · City Builder · Building

Kingdom Two Crowns
Shared: Minimalist · City Builder · Building

Cast n Chill
Shared: Relaxing · Pixel Graphics · Casual

DAVE THE DIVER
Shared: Casual · Relaxing · Pixel Graphics

A Short Hike
Shared: Relaxing · Exploration · Casual

Unpacking
Shared: Relaxing · Casual · Pixel Graphics

Mini Motorways
Shared: Casual · Minimalist · Relaxing

Sizeable
Shared: Casual · Relaxing · Minimalist

Small Spaces
Shared: Relaxing · Building · Sandbox