Games like Lightbulb
Games like Lightbulb include Totally Accurate Battle Simulator, Plague Inc: Evolved, Mount & Blade II: Bannerlord, Russian Life Simulator, and Game Dev Tycoon. We matched them by the tags players give Lightbulb on Steam (Strategy, Incremental, Sandbox, Simulation, and Point & Click): closest matches first, and among equally close ones the better-known games.

Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Strategy

Plague Inc: Evolved
Shared: Strategy · Simulation · Indie

Mount & Blade II: Bannerlord
Shared: Strategy · Sandbox · Simulation

Russian Life Simulator
Shared: Incremental · Simulation · Strategy

Game Dev Tycoon
Shared: Strategy · Simulation · 2D

The Escapists 2
Shared: Strategy · 2D · Simulation

Prison Architect
Shared: Simulation · Sandbox · Strategy

Papers, Please
Shared: Simulation · Point & Click · Indie

Crusader Kings III
Shared: Strategy · Simulation · Sandbox

Tropico 6
Shared: Strategy · Simulation · Sandbox

Beholder
Shared: Strategy · Choices Matter · Simulation

Anno 1800
Shared: Strategy · Simulation · Sandbox

Don't Starve Together
Shared: Sandbox · Multiplayer · Simulation

Terraria
Shared: Sandbox · 2D · Multiplayer

RimWorld
Shared: Strategy · Sandbox · Simulation

911 Operator
Shared: Strategy · Simulation · Indie

CarX Drift Racing Online
Shared: Simulation · Sandbox · PvP

This War of Mine
Shared: Strategy · Simulation · Atmospheric

Teardown
Shared: Sandbox · Strategy · Indie

Age of History II
Shared: Strategy · Simulation · Sandbox

Beholder 2
Shared: Strategy · Simulation · Choices Matter

Anno 117: Pax Romana
Shared: Strategy · Sandbox · Simulation

Cities: Skylines
Shared: Simulation · Strategy · Sandbox

Planet Coaster
Shared: Simulation · Sandbox · Strategy