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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: 575

The Bux System

Universe Sandbox

A system I've had for awhile now, it was originally just the planets and major moons of widow and corosis, but i fully fleshed it out recently. I do not know if the system is stable due to the limitations of my laptop, b

Other
421subscriptionsno growth · 32 hr. agoUpdated: Jan 16, 2024
Author: 76561199467542833

Epsilon Veroda System

Universe Sandbox

Epsilon Veroda System This system is 5.82 billion years old and is located 78.3 light years away from our solar system (Sol System). This system has piqued the interest of scientists due to its existence of a habitable e

Other
408subscriptionsno growth · 32 hr. agoUpdated: Jun 26, 2025
Author: 76561199536582793

Timeline of our Sun

Universe Sandbox

There is pretty much nothing to put here, because the simulation already says everything you need to know. All I ask is to not copy this simulation.

Other
401subscriptions≈ +1 subscribers / day · 3 days agoUpdated: Aug 25, 2025
Author: 76561198052000407

Larger Than the Universe Size Comparison

Universe Sandbox

This is basically a part 2 of my original Universe Size Comparison, but bigger than the universe. There are other verses, and the theoretical limits of a black hole. (This really didn't take that long, but I want to make

Other
396subscriptionsno growth · 3 days agoUpdated: May 20, 2025
Author: 76561198052000407

The pyro star sistem

Universe Sandbox

The Pyro Star System "the place where the life shines" WARNING: SOMEONE STEALED THIS SYSTEM FROM ME AND MADE SOMRE CHANGES TO IT, THIS IS THE REAL PYRO SYSTEM, IM STILL WAITING FOR HIS RESPONSE Update 1.4.1 "The Small Th

Other
393subscriptionsno growth · 3 days agoUpdated: May 10, 2026
Author: 76561199749291356

Solar System (4.535 BYA)

Universe Sandbox

First rocky planets (maybe not high quality, but the satellites are well-designed!)

Other
393subscriptionsno growth · 32 hr. agoUpdated: Mar 24, 2026
Author: 76561198777482933

Solar's Universe

Universe Sandbox

Galaxy's =4 Almost Every star has a System Planets with Life =2 enjoy

Other
385subscriptionsno growth · 3 days agoUpdated: Jun 4, 2025
Author: 76561199079256245

HD 10180

Universe Sandbox

DISCLAIMER If you wish to upload an edit of this simulation of any kind to the workshop, or a simulation including any of these objects, you must approach me first before releasing it as a public simulation. Also, I am a

Other
374subscriptionsno growth · 3 days agoUpdated: Mar 3, 2025
Author: 76561198881265063

Aorus A12 Solar System

Universe Sandbox

All descriptions edited by my sister, all bodies made by me. All descriptions are in the planet panels, please read them, they're very detailed

Other
355subscriptionsno growth · 3 days agoUpdated: Nov 21, 2025
Author: 76561199518947298

Avalar (The world of WoF)

Universe Sandbox

This project has been in the backburner for so long, and I finally decided to get it done, so here it is. The world of Wings of Fire complete with its 3-moon system and continents. (btw the name was decided on a reddit p

Other
343subscriptionsno growth · 3 days agoUpdated: Jun 23, 2025
Author: 76561198828035116

Terraformed Mars

Universe Sandbox

This simulation explores a far-future version of the Solar System in which Mars has been successfully terraformed into a stable Earth-analog world capable of supporting large-scale ecosystems and long-term human civiliza

Other
342subscriptions≈ +1 subscribers / day · 3 days agoUpdated: May 16, 2026
Author: 76561199478641060

Heze System

Universe Sandbox

This is the HEZE system as seen in the Roblox game Starship Roleplay: Emissary. I used the wiki as reference: https://ssrp.starfall-studios.com/wiki/Heze the game can be found here: https://www.roblox.com/games/390541410

Other
339subscriptionsno growth · 3 days agoUpdated: Dec 22, 2023
Author: 76561198119268973

The asteroid that may hit the Moon in 2032 2024 YR4

Universe Sandbox

2032 Lunar Impact Simulation – Asteroid 2024 YR4 Object Name: 2024 YR4 Type: Stony Near-Earth Asteroid Estimated Diameter: 50–60 meters Impact Velocity: ~18 km/s Target: The Moon Estimated Impact Date: December 22, 2032

Other
334subscriptionsno growth · 29 hr. agoUpdated: Feb 28, 2026
Author: 76561199686953455

Apolis System (Abandoned)

Universe Sandbox

Star: Apolis A Planet(s): Apolis A-1, Apolis A-2, Apolis A-3, Apolis A-4, Apolis A-5 Moon(s): Apolis A-1a (Rogue), Apolis A-1b, Apolis A-2a. Apolis A-4a, Apolis A-4b, Apolis A-4c, Apolis A-4d, Apolis A-4e, Apolis A-4f

Other
331subscriptions≈ +1 subscribers / day · 3 days agoUpdated: Jan 19, 2025
Author: 76561199179548993

Ross 128 by Mh11 (Useable in the Update 35)

Universe Sandbox

Welcome to the Ross 128 system located 11 Light years from Earth. Being a close star to the Earth, Its system has been studied heavily and has one confirmed exoplanet as of making this simulation. That one exoplanet is p

Other
330subscriptionsno growth · 3 days agoUpdated: Feb 25, 2025
Author: 76561199222084292

The Ordovician Period

Universe Sandbox

Source : Wikipedia During the Ordovician, the southern continents were assembled into Gondwana, which reached from north of the equator to the South Pole. The Panthalassic Ocean, centered in the northern hemisphere, cove

Other
328subscriptionsno growth · 3 days agoUpdated: Jul 8, 2025
Author: 76561198804906676

Hypothetical Planet Pack

Universe Sandbox

Here’s a collection of 14 fascinating hypothetical worlds. a mix of real scientific proposals, ancient ideas, and creative fan-made planets! From lost moons like Chrysalis and Moon 2, to missing planets like Planet V, Ph

Other
315subscriptionsno growth · 29 hr. agoUpdated: Aug 14, 2026
Author: 76561199365093186

Literally Nothing

Universe Sandbox

Enjoy nothing. It offers everything that you will ever need to destroy, create, and watch. But in reality, you will be doing this with nothing, and seeing nothing. You will be nothing. You are seeing nothing. What is her

Other
315subscriptionsno growth · 3 days agoUpdated: Oct 20, 2026
Author: 76561199135830438

The Skybox Theory Planets

Universe Sandbox

These are Planets from the Skybox Theory. No credits needed Dynux is technically not a Planet

Other
309subscriptions≈ +1 subscribers / day · 3 days agoUpdated: Nov 30, 2025
Author: 76561199740792954
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