Games like UC SIM ~unity-chan simulator~
Games like UC SIM ~unity-chan simulator~ include The Sims™ 4, Where Winds Meet, Plague Inc: Evolved, Game Dev Tycoon, and House Flipper. We matched them by the tags players give UC SIM ~unity-chan simulator~ on Steam (Simulation, Utilities, Video Production, 3D, and Singleplayer): closest matches first, and among equally close ones the better-known games.

The Sims™ 4
Shared: Simulation · Free to Play · Singleplayer

Where Winds Meet
Shared: Free to Play · Singleplayer · Simulation

Plague Inc: Evolved
Shared: Simulation · Singleplayer · Indie

Game Dev Tycoon
Shared: Simulation · Indie · Singleplayer

House Flipper
Shared: Simulation · Singleplayer · Casual

Mountain
Shared: Simulation · Indie · Singleplayer

Papers, Please
Shared: Simulation · Indie · Singleplayer

Totally Accurate Battle Simulator
Shared: Simulation · Singleplayer · Indie

Goat Simulator
Shared: Simulation · Casual · Indie

PowerWash Simulator
Shared: Simulation · Casual · 3D

911 Operator
Shared: Simulation · Singleplayer · Indie

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

Pixel Puzzles: Japan
Shared: Simulation · Singleplayer · Indie

Passpartout: The Starving Artist
Shared: Simulation · Singleplayer · Casual

Aimlabs
Shared: Simulation · Free to Play · Indie

Supermarket Simulator
Shared: Simulation · Singleplayer · 3D

Mini Motorways
Shared: Simulation · Casual · Indie

Electrician Simulator
Shared: Simulation · Singleplayer · Indie

MUSYNX
Shared: Singleplayer · Indie · Casual

Slime Rancher 2
Shared: Singleplayer · Simulation · Casual

Fishing Planet
Shared: Simulation · Free to Play · Singleplayer

Equilinox
Shared: Simulation · Indie · Singleplayer

Streamer Life Simulator
Shared: Simulation · Singleplayer · Casual

Quarantine Zone: The Last Check
Shared: Simulation · Singleplayer · 3D