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Games like Universe Sandbox | IndieDex

Universe Sandbox
Games like Universe Sandbox

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single-players with secrets you find without a guideor

Games like Universe Sandbox

A realistic physics-based space sandbox for creating and destroying planets and cosmic phenomena, with open-ended experimentation and a casual tone.

Heliopedia
A single-player space sandbox where you terraform planets to build ecosystems or trigger disasters, offering a compact, creative god-game experience.
2021-10-12
- Science fiction
- Bird view / Isometric

Indie

Simulator

Sandbox

Terra Firma cover art

Terra Firma

A single-player god-game simulation about shaping a world via tectonics, erosion, and plant life, with short, sandbox-like sessions.

2025-02-20

Strategy
Simulator

The Powder Toy cover art

The Powder Toy

An open-ended physics sandbox for tinkering with heat, pressure, gravity, and countless substance interactions, with a playful, chaotic tone and highly variable session lengths.

2024-06-14

Side view
Simulator
Sandbox

Juno: New Origins cover art

Juno: New Origins

In this single-player physics sim, you construct and program vehicles, explore and customize 3D planets, and tackle career contracts — a deep sandbox that reviewers stick with for 19 to 90+ hours.

2023-01-26

First person
Science fiction
Third person
Bird view / Isometric
Indie
Simulator
Open world
Sandbox
Educational

Unreal Physics cover art

Unreal Physics

A free-to-play casual 3D physics sandbox with realistic demos and a short, well-received tinkering experience.

2024-03-24

Indie
Simulator
Sandbox

Water Physics Simulation cover art

Water Physics Simulation

A relaxing 2D sandbox physics toy where you build and destroy ships, cars, and towns with water, bombs, and disasters.

2021-10-06

Indie
Side view
Simulator
Sandbox

Marble World cover art

Marble World

A physics sandbox for building custom marble races, machines, and decorative worlds.

2022-09-30

First person
Third person
Indie
Simulator
Sandbox
Racing
Kids
Educational

Space Engineers cover art

Space Engineers

A sandbox engineering game about designing ships, stations, and bases in a fully destructible space setting, spanning Creative and Survival modes with a steep learning curve.

2019-02-28

Action
Warfare
First person
Science fiction
Adventure
Survival
Strategy
Third person
Indie
Simulator
Open world
Sandbox

SimpleRockets cover art

SimpleRockets

A compact 2D rocket-building spaceflight simulator with realistic orbital mechanics and a modest but rewarding hands-on feel.

2015-06-03

Science fiction
Indie
Side view
Simulator
Sandbox
Educational

Space Simulation Toolkit cover art

Space Simulation Toolkit

A GPU-powered physics sandbox for rewriting physics, building mechanisms, and experimenting with A-Life and evolution; reviewers find it addictive and log 30+ hours.

2020-06-05

Science fiction
Bird view / Isometric
Indie
Simulator
Sandbox

Space Crash Simulator cover art

Space Crash Simulator

A casual single-player sandbox where you smash planets with SPH physics, fun for short sessions but quickly repetitive.

2025-11-26

Solar 2 cover art

Solar 2

A compact abstract space sandbox about growing a celestial body through gravity, questing, and space battles, with a median reviewer playtime of about six hours.

2011-06-17

Action
Comedy
Science fiction
Adventure
Bird view / Isometric
Indie
Simulator
Open world
Arcade
Sandbox