Games like The Great Couturier
Games like The Great Couturier include Potion Craft: Alchemist Simulator, Dressmaker, Tiny Glade, House Flipper, and Stardew Valley. We matched them by the tags players give The Great Couturier on Steam (Design & Illustration, Sandbox, Crafting, Character Customization, and 2D): closest matches first, and among equally close ones the better-known games.

Potion Craft: Alchemist Simulator
Shared: Crafting · Relaxing · Sandbox

Dressmaker
Shared: Design & Illustration · Crafting · Cozy

Tiny Glade
Shared: Design & Illustration · Sandbox · Relaxing

House Flipper
Shared: Design & Illustration · Sandbox · Simulation

Stardew Valley
Shared: Sandbox · Crafting · Relaxing

The Sims™ 4
Shared: Character Customization · Sandbox · Simulation

My Dream Setup
Shared: Design & Illustration · Sandbox · Relaxing

Disney Dreamlight Valley
Shared: Character Customization · Sandbox · Relaxing

Paralives
Shared: Character Customization · Sandbox · Simulation

Terraria
Shared: Sandbox · 2D · Crafting

Luma Island
Shared: Cozy · Crafting · Casual

Planet Coaster
Shared: Sandbox · Simulation · Relaxing

People Playground
Shared: Sandbox · 2D · Simulation

The Sims™ 3
Shared: Character Customization · Sandbox · Simulation

Graveyard Keeper
Shared: Crafting · Sandbox · Simulation

Coral Island
Shared: Character Customization · Relaxing · Crafting

inZOI
Shared: Character Customization · Sandbox · Simulation

Townscaper
Shared: Sandbox · Relaxing · Casual

Hozy
Shared: Sandbox · Cozy · Relaxing

Starbound
Shared: Sandbox · Crafting · Relaxing

Spirit City: Lofi Sessions
Shared: Cozy · Character Customization · Relaxing

House Flipper 2
Shared: Design & Illustration · Relaxing · Casual

Tiny Eden
Shared: Relaxing · Cozy · Sandbox

gogh: Focus with Your Avatar
Shared: Sandbox · Character Customization · Cozy