Games like Black Hole Simulator
Games like Black Hole Simulator include SpaceEngine, Universe Sandbox, Townscaper, Kerbal Space Program, and Totally Accurate Battle Simulator. We matched them by the tags players give Black Hole Simulator on Steam (Casual, Simulation, Experimental, Space Sim, and Sandbox): closest matches first, and among equally close ones the better-known games.

SpaceEngine
Shared: Casual · Sandbox · Space Sim

Universe Sandbox
Shared: Simulation · Sandbox · Space Sim

Townscaper
Shared: Experimental · Casual · Sandbox

Kerbal Space Program
Shared: Simulation · Sandbox · Space Sim

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Realistic

PowerWash Simulator
Shared: Casual · Simulation · Sandbox

Mountain
Shared: Simulation · Casual · Experimental

DrainSim
Shared: Casual · Simulation · Sandbox

House Flipper
Shared: Simulation · Casual · Sandbox

Garry's Mod
Shared: Sandbox · Casual · Simulation

Goat Simulator
Shared: Simulation · Casual · Sandbox

SuchArt: Creative Space
Shared: Simulation · Sandbox · Casual

PC Building Simulator
Shared: Simulation · Sandbox · 3D

BeamNG.drive
Shared: Simulation · Sandbox · Realistic

Train Simulator Classic
Shared: Simulation · Casual · Realistic

Tiny Glade
Shared: Casual · Sandbox · Relaxing

My Dream Setup
Shared: Simulation · Casual · Sandbox

Mini Motorways
Shared: Simulation · Casual · Minimalist

PowerWash Simulator 2
Shared: Casual · Simulation · Sandbox

Cloud Gardens
Shared: Sandbox · Experimental · Casual

Kerbal Space Program 2
Shared: Sandbox · Simulation · Space Sim

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

SPORE™
Shared: Simulation · Sandbox · Casual

Everything
Shared: Simulation · Casual · Sandbox