Games like Circuit Artist
Games like Circuit Artist include Opus Magnum, People Playground, Baba Is You, SHENZHEN I/O, and while True: learn(). We matched them by the tags players give Circuit Artist on Steam (Simulation, Logic, Moddable, Puzzle, and Programming): closest matches first, and among equally close ones the better-known games.

Opus Magnum
Shared: Puzzle · Simulation · Programming

People Playground
Shared: Sandbox · Moddable · Simulation

Baba Is You
Shared: Puzzle · Logic · Singleplayer

SHENZHEN I/O
Shared: Logic · Simulation · Programming

while True: learn()
Shared: Simulation · Programming · Puzzle

The Farmer Was Replaced
Shared: Programming · Logic · Puzzle

Papers, Please
Shared: Simulation · Singleplayer · Puzzle

Kerbal Space Program
Shared: Simulation · Sandbox · Moddable

The Signal State
Shared: Logic · Simulation · Puzzle

Human Resource Machine
Shared: Puzzle · Programming · Simulation

Garry's Mod
Shared: Moddable · Sandbox · Simulation

SpaceChem
Shared: Puzzle · Logic · Programming

Infinifactory
Shared: Puzzle · Simulation · Programming

Stardew Valley
Shared: Simulation · Pixel Graphics · Sandbox

Game Dev Tycoon
Shared: Simulation · Moddable · Singleplayer

TIS-100
Shared: Simulation · Puzzle · Programming

EXAPUNKS
Shared: Puzzle · Programming · Simulation

Car Mechanic Simulator 2021
Shared: Simulation · Moddable · Sandbox

7 Billion Humans
Shared: Simulation · Puzzle · Programming

Mini Metro
Shared: Simulation · Puzzle · Singleplayer

Zup! S
Shared: Puzzle · 2D · Indie

Besiege
Shared: Simulation · Sandbox · Moddable

Potion Craft: Alchemist Simulator
Shared: Simulation · Singleplayer · 2D

RimWorld
Shared: Simulation · Sandbox · Moddable