Games like The Sims™ 3
Games like The Sims™ 3 include The Sims™ 4, Garry's Mod, inZOI, Paralives, and Stardew Valley. We matched them by the tags players give The Sims™ 3 on Steam (Life Sim, Simulation, Character Customization, Building, and Sandbox): closest matches first, and among equally close ones the better-known games.
The Sims™ 4
Shared: Life Sim · Character Customization · Simulation
Garry's Mod
Shared: Sandbox · Building · Moddable
inZOI
Shared: Life Sim · Simulation · Character Customization
Paralives
Shared: Life Sim · Simulation · Character Customization
Stardew Valley
Shared: Life Sim · Simulation · Sandbox
Cities: Skylines
Shared: Simulation · Building · Sandbox
Disney Dreamlight Valley
Shared: Life Sim · Character Customization · Simulation
Youtubers Life
Shared: Life Sim · Character Customization · Simulation
Planet Coaster
Shared: Simulation · Building · Sandbox
My Time at Portia
Shared: Life Sim · Simulation · Casual
My Time at Sandrock
Shared: Life Sim · Building · Sandbox
People Playground
Shared: Sandbox · Simulation · Singleplayer
Two Point Hospital
Shared: Simulation · Building · Singleplayer
The Sims™ 2 Legacy Collection
Shared: Life Sim · Simulation · Sandbox
Coral Island
Shared: Life Sim · Simulation · Character Customization
House Flipper
Shared: Simulation · Building · Singleplayer
Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Funny
Cities: Skylines II
Shared: Simulation · Building · Sandbox
Two Point Museum
Shared: Simulation · Building · Life Sim
Mount & Blade II: Bannerlord
Shared: Sandbox · Character Customization · Singleplayer
Kerbal Space Program
Shared: Simulation · Sandbox · Building
PC Building Simulator
Shared: Simulation · Building · Sandbox
Crusader Kings III
Shared: Simulation · Life Sim · Character Customization
The Sims™ Legacy Collection
Shared: Life Sim · Building · Sandbox