Universe Sandbox
Universe Sandbox mods
A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.
2,316 mods, most downloaded first · newest update 28 Oct 2026
- Ross 128 by Mh11 (Useable in the Update 35)by 76561199222084292Welcome 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 potentialy Earth-Like. Ross 128 b Ross 128 b discovered in 2017 is a heavily o...1.1k downloadsupdated 20 mo ago
- If all the planets and stars of the galaxy orbit 1 massive starby HippopotomonstrosisFinally a new version!1.1k downloadsupdated 7 y ago
- Habitable zone size Comparisonby 76561199022838658@The habitable zone of every hab.-zone-displayable-star that is on the tab (and some others that i know). Note here that Stephenson 2-18 is colder because the programmers accidentally made the star WAY to hot, so i searched the temperature on google and it's actually 3200K. VV & MU Cephei and Rho...1.1k downloadsupdated 6 y ago
- Horizon - Epsilon Eridaniby 76561199222084292Welcome Traveler, You See the Discovery of The Horizon. (This Simulation Is Meant to Exist in the Same World As James Cameron's Avatar.) After Humans were Not successful in colonizing Pandora in the Alpha Centauri A System, The Humans had fleed to Gaea that only has Ocean Life, The Humans can't s...1.1k downloadsupdated 3 y ago
- Alderaan Star System with the Explosion!by BlueMarbleNow, If you don't want any planet explosion, just delete the asteroid and moon that are in the thumbnail. Now, Since I don't wanna add 90 paragraphs of text, lemme give you the rundown (correct me if I'm wrong.) Alderaan is the planet Princess Leia was born and grew up on, that she eventually lef...1.1k downloadsupdated 8 y ago
- HD 100546 or KR Muscae System (REVAMP UPDATE)by 76561199233492576The KR Muscae System formally known as the HD 100546 system containing the largest planet For the most appealing imagery, please go to the View settings, scroll to the perception section and set Brightness Compression to Human Eye, Object Scales to Realistic, and Particle Scales to Realistic. And...1.1k downloadsupdated 5 mo ago
- My Custom Version of Neptune.by BlueMarble(Edit:) Future BlueMarble here. I'm finally going to be opening a discord server for anyone to join, so if you are interested, here's the link. It's relatively new with not many members, but I'm sure we can turn it into something great! :) Alright, so, I had someone request this a while back when...1.1k downloadsupdated 7 y ago
- THE EARLY SOLAR SYSTEMby 76561199131115651This simulation simulates the unstability and past of the Solar System. Header PLANETS Vulcan: It was a proposed planet that some pre-20th century astronomers thought existed in an orbit between Mercury and the Sun. Speculation about, and even purported observations of, intermercurial bodies or p...1.1k downloadsupdated 2 y ago
- wutby tuppcatwut did i do1.1k downloadsupdated 4 y ago
- Cell to Singularity Beyondby 76561199108088149Recreation of the solar system garden from The Beyond in Cell to Singularity. CELESTIAL BODIES Sun Earth's home star is the center of our solar system, the point around which all celestial objects orbit. It shines its light on each of the eight planets, and its warmth is essential for all life on...1.1k downloadsupdated 2 y ago
- Terraformed Galilean Moonsby BlueMarbleWell, nothing much to say besides Enjoy.1.1k downloadsupdated 8 y ago
- Terraformed Venus With White Clouds, White atmosphere, Vegetation, Climate, and Cities.by BlueMarbleRequested so enjoy.1.1k downloadsupdated 8 y ago
- Gliese 514 Exoplanet Systemby 🐋 Syz°.fish 🐬Eccentric super-Earth moving in and out of the habitable zone // Gliese 514 (Gl 514 or GJ 514) is a real exoplanet system located 24.9 light-years away in the constellation Virgo. It consists of a solitary star and one known planet. The star, Gl 514, is a high-end red dwarf with 0.51 solar masses...1.1k downloadsupdated 3 mo ago
- Kepler-186 Star Systemby BlueMarbleKepler-186 Is a red dwarf star about 400 light years away, with one (almost) earth sized planet that could harbor life, and water. This Simulation consists of: Kepler-186 Kepler-186 b Kepler-186 c Kepler-186 d Kepler-186 e Kepler-186 f Added cities again to K-186 f to simulate what life would be...1.1k downloadsupdated 8 y ago
- TOI-700by 76561199001665415TOI 700 is a red dwarf 101.4 light-years away from Earth located in the Dorado constellation that hosts TOI 700 d, the first Earth-sized exoplanet in the habitable zone discovered by the Transiting Exoplanet Survey Satellite (TESS). Three exoplanets have been detected by TESS to be orbiting the h...1.1k downloadsupdated 5 y ago
- great world - 20221108-172019by 76561199244006262its my first world pls like it1.1k downloadsupdated 4 y ago
- Helios Binary Systemby 76561199013204410This system has many planets, and is a binary star system! It also has many catagorized planets, most of them are colonized. On the crystal and mineral rich planet are many minerals and crystals. There are so many crystals, you can see many of them from space! There is then the capital planet, th...1.1k downloadsupdated 5 y ago
- Terraformed Goldilock with Vegetation, White Clouds and Atmsophere, Cities, and Climate.by BlueMarbleI figured, "Eh, since we call a habitable zone a 'goldilocks zone,' why not make a 'Goldilocks planet?' Enter "Goldilock, probably one of the coolest objects I've made in Universe Sandbox. I hope you enjoy it as much as I did. -BlueMarble.1.1k downloadsupdated 8 y ago
- moon crashby 765611989836581521.1k downloadsupdated 5 y ago
- A planet that has a moon that has a moon that has a moon that has a moon that orbits it.by BlueMarbleYes, this is an actual Simulation I wanted to make. -BlueMarble1.1k downloadsupdated 8 y ago
- R136a1, But about 5 million years older.by dr_nefarioR136a1is a Wolf-Rayet star located 163,000 light years from Earth, in the Large Magellanic Cloud. It is the most massive star we have found, at 315 solar masses. When it dies, it will expand to an enormous size, smashing through the 23.4 AU upper size limit for a star, at 24.8 AU. The reason for...1.1k downloadsupdated 4 y ago
- Moon Crashing Into Earthby BlueMarbleWARNING: The National Aeronautics And Space Administration Has issued a warning to all humans. 2 minutes ago, a large object was detected heading towards the moon. Its course had directed the moon's orbit to head straight into Earth. Please get onto the Space Station Evacuators before it is too l...1.1k downloadsupdated 8 y ago
- The Ralus Systemby 76561199099488123I was just bored so I made this, nothing else. (:1.1k downloadsupdated 2 y ago
- Titan Star Systemby BlueMarbleThis is a Star System that I finished in 32 minutes. It was a challenge requested by an old friend of mine and I guess I finished It. So how about we get into this. This solar System Has a lot about it. One of the first things that has never been done before is an atmosphere and CITIES on a Gas G...1.1k downloadsupdated 8 y ago
- Young Solar System [4.5BYA]by 76561198711707611This Is Roughly What are solar System Looked like 100 Million Years After it Was Born! There Is some unexpected Surprises And I will Add More! ENJOY1.1k downloadsupdated 6 mo ago
- Quadropole Star Systemby Darth KeyvanSystem with 4 stars with one life bearing moon and one life bearing planet.' Update 1: I have added more stuff to system and change some other to make it more realistic. I also changed the color of life harboring bodies orbit to green. Update 2: minor improvments. added rings to some planets. sev...1.1k downloadsupdated 4 y ago
- J1407B Systemby 76561199206977606J1407B, often known as Super-Saturn is a planet/binary of the star V1400 Centauri. The planet/binary is often known for his rings, that are most likely a planetery disc particles. They form planets/moons over millions of years. J1407B has one moon/planet having no name, in the simulation the plah...1.1k downloadsupdated 3 y ago
- Complete Scale Tourby SolunaEvery available in-game object ordered by radius.1.1k downloadsupdated 8 y ago
- Kepler-452 Star Systemby BlueMarbleKepler-452 Star System located around 1500 light-years away contains a habitable super-Earth. Don't question the lights lol. Enjoy! -BlueMarble1.1k downloadsupdated 8 y ago
- (UPDATED) City Light Planets and Moon!by BlueMarbleCredit To GodGuGong for 3 of the planets. I'm hoping people can make a collection of them to share with others. Enjoy!1.1k downloadsupdated 8 y ago
- Terraformed Proxima Bby BlueMarbleKinda liked this, especially the Climate and the cities, y'know. Hope you like it.1.1k downloadsupdated 8 y ago
- Okmaran - System of The Giants V. 1.00by 76561199222084292Okmaran - System of The Giants V. 1.00 A System of 6 Major Gas Giants MANY MANY Objects in this system (over 300) To Many objects for a Logical Description so yeah. OKMARAN IT IS. Thank's for Seeing! - Myles.1.1k downloadsupdated 20 mo ago
- Gemstone Teapots 2by ajnunez89These are some more teapots made out of gemstones. They all are based off of real gems and realistic colors. It includes lots of more cool gemstones. I hope you enjoy! Like and subscribe! Feel free to us it in any of your sims, just don't say its yours. NOTE: Sorry I haven't been around lately, I...1.1k downloadsupdated 9 mo ago
- Sauron .by marcmg28Moon that orbits an extrasolar planet with appearance and similarity to one eye , from and its name Sauron , a anique moon to be outside the zone of avitability maintaining areas on its surface with liquid water and life in it . It is a true wonder .1.1k downloadsupdated 3 y ago
- Realistic Solar System (WIP)by BlueMarbleStill fixing some things with the Planets, etc. Maybe add more moons or planets, depending. But yea, a White Dwarf Solar System in Universe Sandbox. How fun. Anyways, enjoy! -BlueMarble1.1k downloadsupdated 8 y ago
- Italiæ systemby 76561199304975717i spend really long on these systems so it'd warm my hart if you liked, hpe you enjoy your day!1.1k downloadsupdated 3 y ago
- Theoretical upper size limit for a starby dr_nefarioCurrently on our knowledge of physics, this is how large a star could expand to. It is around 3.5 billion km in diameter, or 23.4 AU. However there could be even larger stars out there.1.1k downloadsupdated 6 y ago
- My Solar System Part 2by 76561199092298937This is the second version of my solar system. Ixia now has an atmosphere and a new BIG gas giant. Hope you enjoy!1.1k downloadsupdated 5 y ago
- Tauras Binary System Completeby 76561199229513541Welcome to the Tauras binary system. Its very weird here there are planets with winds so fast you could see them move across the planet in normal time. Gas giants so hot it can melt solid gold but so cold it could freeze you in seconds. Two planets with life forms that are at war. These are only...1.1k downloadsupdated 2 y ago
- The Universeby 76561198987562757i built it!!!!!!!!!!!!!!!!!!!!!!!!1.1k downloadsupdated 6 y ago
- Pink and Purple Banded Gas Giantby BlueMarbleSome people have asked me to make some color banded gas giants, so Here's one of my favorites. Enjoy.1.1k downloadsupdated 8 y ago
- Cryoplasmosis Star Systemby BlueMarbleThis took FOREVER. I hope you enjoy. Anyways, here's the description. -BlueMarble/Anonymoose and Cryoraptor. Description: This is the Cryoplasmosis System, in a galaxy far far away. Okay, enough of the Star Wars references, it's located in the Whirlpool Galaxy, far out of our reach. It is around...1.1k downloadsupdated 8 y ago
- Biggest possible star (35555 AU) with habitable zoneby 76561198958369849have fun creating your own solar system with the biggest star possible!1.1k downloadsupdated 4 y ago
- Rimange Packby BlueMarbleAfter watching Spike Viper's videos on how to change a planet's atmosphere, I took it a step further By Adding Cities to these planets that I made. Enjoy! Credit me for use in other simulations you might make! :)1.1k downloadsupdated 8 y ago
- Kepler-186 Planets Packby BlueMarbleConsists of all the planets that orbit Kepler-186: K-186 b K-186 c K-186 d K-186 e K-186 f Enjoy! -BlueMarble1.1k downloadsupdated 8 y ago
- Free-To-Use Milky Way Background(READ DESC)by BlueMarbleThis is not the one I used in Templates Galore. THAT background is more modded. But this? Eh, You guys can use it. Use this for whatever you want! Credit "MrMissalot" If you wanna use it. Enjoy, BlueMarble (Remember, Credit "MrMissalot" If you wanna use it!)1.1k downloadsupdated 8 y ago
- DMPP-3 Exoplanet Systemby 🐋 Syz°.fish 🐬Disintegrating rocky planet in a compact binary system // DMPP-3, also known as HD 42936, is a real exoplanet system located 154 light-years away in the constellation Mensa. It consists of either two stars or a star and a brown dwarf, along with at least one exoplanet. The primary star, DMPP-3 A,...1.1k downloadsupdated 3 mo ago
- Pingu unvigintuple (21) Star Systemby BlueMarbleHere it is. A decuple star system that's never been done before. I named this in honor of my cat who died 2 months ago. He was with me for 12 years of my life and was always there to keep me company. Just like memories we had, I added in almost every object that wasn't in the terraformed solar sy...1.1k downloadsupdated 8 y ago
2.3k mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.

