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Mods: Universe Sandbox

Mods for your games from Steam Workshop and Source.

Counts describe mods indexed by GameRadar. Workshop popularity is measured in subscriptions.

Indexed mods: 576

Galaxy Model

Universe Sandbox

This is my glaxy model where you can see borning stars and their evolution. I really like it :)

Other
866subscriptionsno growth · 44 hr. agoUpdated: Jun 18, 2018
Author: 76561198353909036

The last star system

Universe Sandbox

After trillions of years, the last red dwarf is at its end. It will collapse into itself in 82 years. After the last star dies out. The universe is doomed to be in eternal darkness until the end of time.

Other
862subscriptions≈ +1 subscribers / day · 17 hr. agoUpdated: Nov 11, 2024
Author: 76561199273920818

Thythera System

Universe Sandbox

THYTHERA SYSTEM "Where the sky is always red!" System made by: spaceexplorer78 on Steam (evillarry on Discord) (Please read this first, do NOT use the flashlight in this simulation! It will break the lighting and you wil

Other
848subscriptions≈ +1 subscribers / day · 2 days agoUpdated: Sep 7, 2025
Author: 76561199758298108

Alternate reality Solar System

Universe Sandbox

have you ever wondered, What would have happened if everything that happened in our solar system ...never happened? this Simulation shows the shocking differences in the solar system if events like the grand tack, the co

Other
834subscriptionsno growth · 2 days agoUpdated: Jul 25, 2026
Author: 76561197970890875

Pulsar simulation

Universe Sandbox

Just a pulsar simulation that has 9 planets 14 moons 1 asteroid and 1 Satellite.

Other
832subscriptionsno growth · 2 days agoUpdated: Jul 2, 2025
Author: 76561199203400160

Ultra-Realistic Ice Giant

Universe Sandbox

@Ultra realistic depiction of an Ice Giant Planet. Made by Madplanetguy (Don't steal this item, if you use it in a simulation, give credit, thanks)

Other
820subscriptionsno growth · 46 hr. agoUpdated: Jan 1, 2021
Author: 76561198880449275

4.4 Billion Years Ago...

Universe Sandbox

Welcome to the past, How far back have you went? 4.4 Billion years, to the early dawn of our solar system. Experience Worlds that look so different, they might aswell be different planets. Visit Lone wanderers, Lacking a

Other
813subscriptionsno growth · 46 hr. agoUpdated: May 28, 2023
Author: 76561198861291023

Karnus Galaxy

Universe Sandbox

This is one of my best simulations ive ever made and also my most time taking one. This galaxy took 2 weeks and 3 days to fully complete. Its filled with stars, planets, moons, and etc. This system has over 300 stars and

Other
811subscriptions≈ +1 subscribers / day · 15 hr. agoUpdated: Mar 21, 2026
Author: 76561199651338596

Xeltrion 9 Star System

Universe Sandbox

A triple star system, how cool is that? Took me a long time, right? Months without uploading, I've been waiting for the game to settle on the updates and trying to figure out if I could mod stuff-- Not much besides the m

Other
793subscriptions≈ +1 subscribers / day · 15 hr. agoUpdated: Apr 13, 2026
Author: 76561198302355192

most accurate solar system

Universe Sandbox

hope u like it! had to remove the asteroid belt/kuiper belt for lag reasons.

Other
783subscriptionsGrowth: awaiting a fresh measurementUpdated: Jan 25, 2024
Author: 76561199465701695
762subscriptionsno growth · 41 hr. agoUpdated: Jul 17, 2018
Author: 76561198195534711

Uranus

Universe Sandbox

How Uranus SHOULD look.

Other
752subscriptionsno growth · 44 hr. agoUpdated: Jun 24, 2018
Author: 76561198168161050

Planet Pack

Universe Sandbox

8 cool planets created by me, feel free to use, but give credit, thanks :)

Other
742subscriptionsGrowth: awaiting a fresh measurementUpdated: Jan 18, 2023
Author: 76561199075393500

Gravitational lensing

Universe Sandbox

Just a black hole orbited by a bunch of stars so you can see the weir/cool effects of gravitational lensing.

Other
696subscriptionsno growth · 44 hr. agoUpdated: Jun 28, 2018
Author: 76561198091168601
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