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
- Realistic Quasarby ByllThis Took Me Like 5 Hours To Make Lol560 downloadsupdated 2 y ago
- AR Cassiopeiae by Mh11by 76561199222084292Please do not under and curcumstances Re-Upload or make a edit of this item public! I Also Have been making some new workshop items within the new Public Beta of the new update and will release them about every week whenever the update goes live, I am also remastering one of my old most favorite...558 downloadsupdated 22 mo ago
- Polynosis Barion Binary Systemby nikofbeanA S-Type Binary System, where both of the stars are blessed with great and wonderful planets, while those, binary, spin in a stable and constant motion. One, or actually two habitable and also binary planets/ and another with its huge and dense rings. Explore this awesome modded S-Type Binary Sys...557 downloadsupdated 4 y ago
- TRAPPIST-1by 76561198881265063TRAPPIST-1 is probably one of the most interesting systems we found. What was once thought to be a lonely ultra low mass star, turned out to be a treasure trove of Earth-mass worlds. Although they likely don't have the potential for life, they are still very interesting! The possibilities for wha...557 downloadsupdated 2 y ago
- White Holeby somefoolouthere (she/her)It's not really a white hole. It's just a cue ball the size of a black hole with negative mass. The lighting was also changed to make it look illuminated, so other objects won't look right on this save.555 downloadsupdated 8 y ago
- My solar systemby 76561199019032301This is my favorite Solar system, that i have made by me self i hope you enjoy554 downloadsupdated 4 y ago
- YEET Sunby 76561198352243214553 downloadsupdated 7 y ago
- RSS 2by 76561198862380676The more accurate and up to date real solar system. (I did have a low FPS on my computer so you have been warned.)553 downloadsupdated 5 y ago
- Giant cosmic red space bananaby 76561199188705568A really really big banana and it's because i think it looks cool550 downloadsupdated 5 y ago
- =+= Gygan System =+=by 76561199139601988WELCOME TO THE GYGAN SYSTEM Welcome to Gygan, a very polished and highly habitable system with many planets, civilizations and more! 1.71: very small changes to some habitable planets i'll finish them later down the line loster Space Chip Reviewed this system, a true thank you to everyone who che...550 downloadsupdated 16 d ago
- Dwarf Star Packby AthenaDivaAll known types of Dwarf Stars -Red Dwarf -Blue Dwarf -White Dwarf -Black Dwarf -Brown Dwarf (L) -Brown Dwarf (T) -Brown Dwarf (Y) Will be updated if any new discoveries on Dwarfs are made.549 downloadsupdated 8 y ago
- Anthea SystemThis is my Planet named Anthea and his star named Poseidon549 downloadsupdated 2 mo ago
- PC crasherby ChrisTopSimply Unpause Time. (Hit Space Bar If PC)548 downloadsupdated 6 y ago
- planet pleese kill meby heroinstevesave this planet so it will appear in my objects tab so you can spawn it later547 downloadsupdated 3 y ago
- Ran (Epsilon Eridani) by Mh11by 76561199222084292Please keep all edits/steals of this item private and not put on the workshop! Welcome to the Epsilon Eridani or official name Ran exoplanetary system located not so far from Earth being one of our closest neighbours. It is a fairly young system being about 700 Million years old and has one confi...547 downloadsupdated 21 mo ago
- British Empireby 76561198880449275Map of the British Empire on an Earth Do not steal or repost this item, thanks! My YouTube My Join my Discord Server546 downloadsupdated 5 y ago
- Toi 700 dwarf star M .by marcmg28System located by NASA a,100 light years,in the southern golden cost.Star of 40% the mass of the Sun.More inner planet Toi 700 b almost the size of the earth grew rocky,orbits every 10 days.Central planet,Toi 700 c, 2.6 larger than the earth,between earth size and Neptune orbits every 16 days.Toi...546 downloadsupdated 5 y ago
- AVATAR Planets (Gas giants) And their moonsby peart93The ones missing are Zeus Cronus Poseidon And The unnamed gas giant because this one is only for alpha centauri A / Rigil kentaurus.544 downloadsupdated 6 mo ago
- the Louia star systum!by 76561199435990311Louia - a blue star with around 5-6 masses of the sun. Laverce - a lava planet with a toxic atmosphere and large lava lakes. Firuce - a venus like planet with a harsh serface below the atmosphere. Louse - a thick atmosphere planet, it was habitable... it has 2 moons Alate and Laeni. Orion - a ear...538 downloadsupdated 2 y ago
- SYSTEM AN32by 76561199875262532A Brown dwarf system which humans found in the year 2132 .(inspired by interstellar)538 downloadsupdated 11 mo ago
- The Rinaer Systemby 76561199471603723The Rinaer System consists of four planets, two rocky and two gas, and 21 moons. the first planet is named Angent, a red equivalent to Venus, and has a captured asteroid named Orsan as a moon. Next in line is Ticita, which is a beautiful blue gas giant. it has 14 moons and one of them is habitabl...537 downloadsupdated 3 y ago
- Kerbollar Systemby 76561199471603723The Kerbollar system. I am working on it to make it very accurate to the game. that means orbits, inclinations, solar days, etc., etc. have fun!537 downloadsupdated 3 y ago
- PSO-5252.4.6-425 seen from solar systemby 76561199029691723PSO-5252.4.6-425 is a randomly generated object in this simulation. however its a lonely hot gas giant 14 times the mass of jupiter can u find it?537 downloadsupdated 6 y ago
- Glitched solar systemby 76561198383817939Idk what happend536 downloadsupdated 4 y ago
- Ra systemby 76561199644769516Stars: Ra- The only star in the system created from the left overs of a past supernova Planets: Osiris-Named after the Egyptian God Osiris, god of the underworld. The first and hottest planet, having a molten like texture to it's surface even though it is mainly part of the minerals on it. Pafekl...535 downloadsupdated 21 mo ago
- Early Solar Systemby JRICH0724Mercury: Previously a gas dwarf, probably had a small asteroid moon around it. Venus: a habitable alien world with a small moon. Earth: an alien colony with not much plant life, the aliens would shortley be killed due to "a certain collision" Mars: a habitable paridise a bit cold in the summer bu...535 downloadsupdated 8 y ago
- BInueku Systemby 76561199183326554534 downloadsupdated 10 mo ago
- Solar System Orbiting Solar System IIby ♥ XTS ♥Many Randoms added to 2 suns, 1 orbiting the other. Both have planets 2 Suns Planets Moons Not a stable model atm Experimental Version Sol to Sol534 downloadsupdated 4 y ago
- recreating the soler sistemby neuroskynetthis is our soler sistem but with a catch i built it from scratch and i made mars simaler to earth i wanted to make mars into a habitable planet but i could not maybe you can i have gotten it close i want you to try to make life on it if you dont want to ok then rome around and do whatever you wa...532 downloadsupdated 4 y ago
- Anteros Systemby 76561199442394074Anteros A* (сверхмассивная чёрная дыра) 1 чёрная дыра (Anteros C) 2 звезды (Anteros B, Anteros D) 1 коричневый карлик (Anteros E) Anteros B 3 планеты (Anteros B-1, Anteros B-2, Anteros B-3) Anteros B-1 0 спутников Anteros B-2 0 спутников Anteros B-3 3 спутника (Anteros B-3-1, Anteros B-3-2, Anter...531 downloadsupdated 3 mo ago
- GJ 251 SystemThe GJ 251 system is a nearby planetary system centered on GJ 251, a cool red-dwarf star located roughly 18 light-years from Earth in the constellation Gemini. Despite being much smaller and cooler than the Sun, GJ 251 hosts at least two known planets, making it an interesting nearby system for s...531 downloadsupdated 2 mo ago
- Muskar-T Systemby Harambe 41The To Hot Planets In The System Called Mugis And Mufist Are The Worst Place's In The System530 downloadsupdated 5 y ago
- KSA fan systemby 76561199519419039My idea for what the custom solar could be like in KSA when they make it. I went for realism and also gameplay design when creating this system. I made descriptions to all of these objects but I couldn't get it to be put here (probably cause its so long) so ill leave them as a doc. Spell names ba...530 downloadsupdated 18 mo ago
- Alpha Funiculiby 76561199077931297Attribution Inspiration: — Solitude by Mylo (Mh11) & An_Idot (link); — Nu Vigilis by oberorka (not a US² simulation) Simulation: —All objects made by folly.fire A G-type main sequence star, the closest star to the Sun. With 4 confirmed planets, and 2 unconfirmed, it hosts two planets that may pot...530 downloadsupdated 5 mo ago
- Half-Life 2 Earth Updatedby 76561199452255813What the earth may look like dering HL2.529 downloadsupdated 3 y ago
- Earth compared to Kepler-452 bby 76561199203400160Another compared Earth to exoplanet i made with Kepler-452 b And Kepler-452 b is 1.63 the size of Earth but with that hypothetical map on Kepler-452 b Discussion thread527 downloadsupdated 18 mo ago
- "Naturally" Terraformed Marsby GiulioTopLadWhat did you do? I terraformed Mars in a way where theoretically humanity can do in the future using high tech technology (that of course doesn't exist yet). How much is modified? I modified the atmosphere, the greenhouse effect, then added a magnetosphere and water too (which can be theoreticall...527 downloadsupdated 6 mo ago
- 一些做好的宜居星球by 76561199023074125帮助朋友入门上传的几颗自作宜居星球,有需要请自取。请不要打开时间模拟,直接保存星球即可;大气反射率,温室效应,大气层数均未统一,请在游玩时自行调整以适应您的需求,祝您游玩愉快。 Help friends to get started uploading a few self-made habitable planet, there is a need to please take. Please do not open the time simulation, directly save the planet; atmospheric reflectivity, greenhouse e...526 downloadsupdated 3 y ago
- A system inside a Nebulaby 76561198778850119Bun is a planet with a lot of moons orbiting it. This cool planet is a gas giant is a rainbow planet with some satellites orbiting it.526 downloadsupdated 9 mo ago
- All dwarfs & The sun crashingby 76561199066623460from white dwarf too blue dwarf look at them crashing.524 downloadsupdated 6 y ago
- Pack of some of my random gas giantsby 76561198880449275afew random gas giants from my inventory, all made by me (Madplanetguy) Please give credit if theyre used in a simulation524 downloadsupdated 7 y ago
- My Simulation - 20210904-173459by 76561199053625661the big bang521 downloadsupdated 5 y ago
- Binary Black Hole K type star systemby BUCKETTSHere we have a black hole and a K Type Star Gas giant with rings A moon with i believe sufler dixcoide oceans and a Plant With Life Marine And Terristal518 downloadsupdated 21 mo ago
- Updated QUASAR - Active Galactic Nuclei Galaxyby Chocice75Quite a while ago, someone named "What Da Math" uploaded a QUASAR galaxy to the Workshop, using the Milky Way from the Galaxy Collision simulation. Since it was made before Update 23 came out, I decided to remake it, since the original version doesn't look as good anymore.517 downloadsupdated 7 y ago
- The Real kerbin System 3.1by 765611990666234603.1 Upadate ads the "Lemonade System" got the idea from the book (series) Lemonade War! Then hope you like it! Then Bye!!516 downloadsupdated 6 y ago
- How Moons carve gaps in rings - 14 year running resultsby 76561199003933743This simulation was left running overnight at a rate of 3 hours per second. For better visualization, the rings are more closely packed.516 downloadsupdated 7 mo ago
- Terraformed Venus (50%)by KOMAINA slightly terraformed Venus with an orange surface, oceans, a more clear but still thick atmosphere and with no human cities. - - - - - - - - - - Terraformed Bodies (50%): Terraformed Sun (100%):516 downloadsupdated 8 y ago
- Nuclear War Simulation (SLO-MO)by K*Here is a nuclear war simulation to see. Its June 28, 2025 The world has developed far more powerful nukes anyone could have imagined. These nukes are 10 times powerful than the Tsar Bomb. One nuke can take out large amounts of land. Aruba And Serbia Invent Their 1st Nukes! Who Will Win This War?514 downloadsupdated 7 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.

