Rela
Games like Rela

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Games like Rela

A compact indie simulation where you create stellar systems and then experience them as a celestial body.

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

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Games like Rela | IndieDex

Rela
Games like Rela

Find the Steam hidden gems

single-players with secrets you find without a guideor

Edit search

Games like Rela

A compact indie simulation where you create stellar systems and then experience them as a celestial body.

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

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

Titans of Space PLUS

A single-player VR tour through the solar system and giant stars, offering awe-inspiring scale and casual educational activities.

2019-12-19

Adventure
Indie
Simulator

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

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

Rogue System

A realistic space sim centering on orbital mechanics and deeply simulated ship systems, with a short tutorial-focused experience.

2022-06-10

Science fiction
Simulator

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

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

Orbital Physics Simulator

A hardcore single-player orbital simulator using real Einsteinian physics for trajectory plotting, with a steep learning curve that early reviewers found rewarding but confusing.

2026-06-22

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

Sylph

A single-player spaceflight sim near a black hole with realistic orbital mechanics, a technical learning curve, and current technical issues.

2026-04-08

First person
Science fiction
Simulator

Marble Odyssey: Sandbox

A cozy physics sandbox where you build marble contraptions on a space-floating wooden table and watch them flow, ideal for calm, short sessions.

2025-12-05

First person
Puzzle
Indie
Simulator
4X (explore, expand, exploit, and exterminate)
Sandbox
Kids
Educational

Heliopedia