Games like A Simpler World
Games like A Simpler World include House Flipper, Stardew Valley, Tiny Glade, Garry's Mod, and House Flipper 2. We matched them by the tags players give A Simpler World on Steam (Cozy, Decorating, Building, Sandbox, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

House Flipper
Shared: Cleaning · Building · Sandbox

Stardew Valley
Shared: Pixel Graphics · RPG · Sandbox

Tiny Glade
Shared: Building · Cozy · Sandbox

Garry's Mod
Shared: Sandbox · Building · Casual

House Flipper 2
Shared: Decorating · Casual · Building

Hozy
Shared: Cozy · Sandbox · Casual

My Dream Setup
Shared: Building · Sandbox · Cozy

Sticky Business
Shared: Casual · Decorating · Relaxing

SUMMERHOUSE
Shared: Sandbox · Building · Casual

Townscaper
Shared: Building · Sandbox · Relaxing

The Sims™ 4
Shared: Building · Sandbox · Casual

Graveyard Keeper
Shared: Pixel Graphics · Sandbox · RPG

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Relaxing

Gourdlets
Shared: Sandbox · Building · Cozy

PowerWash Simulator
Shared: Casual · Cleaning · Sandbox

People Playground
Shared: Sandbox · Building · Pixel Graphics

The Sims™ 3
Shared: Building · Sandbox · Casual

Luma Island
Shared: Cozy · Casual · Building

Paralives
Shared: Building · Sandbox · Cozy

Town to City
Shared: Cozy · Building · Relaxing

Cities: Skylines II
Shared: Building · Sandbox · Simulation

Spilled!
Shared: Cozy · Casual · Relaxing

Leaf it Alone
Shared: Cozy · Cleaning · Casual

Leafy Corner
Shared: Cozy · Casual · Decorating