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
- Ultra-Realistic 55 Cancri eby ByllTook Me Several Hours So Please Do Not Steal (:339 downloadsupdated 2 y ago
- Wolf packby kwindl339 downloadsupdated 7 y ago
- The One Piece solar system.by 76561198793917488This is my representation of the solar system in One Piece. The Sun: A star, the same as our sun, not much is known or explicitly stated. Earth (AKA The Blue Planet): Where One Piece takes place, divided by the Red Line that runs around the planet horizontally, and the Grand Line, that runs basic...338 downloadsupdated 6 mo ago
- Solar System in Interstellar (2014)by 76561198877444928The solar system on the other side of the wormhole in Interstellar (2014). Near Gargantua, the Endurance can be seen making a slighshot towards Edmund's Planet while releasing a Ranger Space Shettle and TARS into the black hole, Gargantua.338 downloadsupdated 5 y ago
- TON 618by extremely lobotomized texanthis is a ultramassive black hole (that is a catagory) that might be the largest single body in the universe.338 downloadsupdated 5 y ago
- Neutron Planetby rodan1993I accidentily collided a planet with a neutron star in a certain way. Instead of them both exploding and a black hole forming, this formed. It is about the size of earth with two, very wide jets that exttend for a while. It's pretty cool. You can use it in any projects. If you post it, just menti...337 downloadsupdated 8 y ago
- Epic view of an Earth like planet from the snowy mountains of its moonby DeMooniCI achived this epic view by landing and using an asteroids land relief to simulate huge snowy mountains. This is not a functional system, I just made if for the amazing views, basically, this was made only to get the screenshot. Enjoy :)336 downloadsupdated 4 y ago
- The Big Bangby 7656119843570309813.5 billon years ago: THE BIG BIG BANG335 downloadsupdated 8 y ago
- rouge planets from solar ballsby 76561198887230713335 downloadsupdated 11 mo ago
- After Half-Life 3by 76561199162091590A long time after Gordon Freeman and the rebellions manged to defeat the Combine and forcing them to leave Earth but it seems all hope is still lost. Despite the Combines loss the Earth is left in a dire state. Likely all life on the planet shall perish. At least 50,000 years from now the Earth h...334 downloadsupdated 2 y ago
- skyes awesome custom objectsby pinkskiesglaggleland feel free to save these and use them thats literally why i put this on the workshop :thumbsup: gravity is turned off so dont worry about unpausing nothing will happen :)334 downloadsupdated 3 y ago
- THE SIRAN SYSTEMby GooberNikTHE SIRAN SYSTEM The Siran system is an older system in the Lycenia cluster and is a M7V type star. It consists of 3 planets and 16 attracting objects. KEY: Ω: STAR ω: MAIN PLANETS Σ: INNER ASTEROID BELT OBJECTS Δ: VULCANOIDS β: MINORS ASTEROIDS ε: MAJOR MOONS334 downloadsupdated 7 mo ago
- Death Star and Alderaanby 76561199077088098Death Star explodes Alderaan334 downloadsupdated 5 y ago
- The Universeby 76561199192520942DISCLAIMEr the distances may not be 100% accurate ALTHOUGH all of these objects are 100% real WARNING YOU MAY EXPERIENCXE MINOR (medium) LAG334 downloadsupdated 5 y ago
- Interesting System Slowly Growing - Preview Version (Please read below)by ♥ XTS ♥Preview Version All seems to be working so far. I really laid into a star. I let all kinds of elements enter it. Now, many elements are all about. I added all kinds of ingredients by introducing many types of objects (asteroids, rock particles, moons, gas giants, rocky planets, moons, other stars...333 downloadsupdated 3 y ago
- a systemby 76561199097455569332 downloadsupdated 2 y ago
- Habitable Alpha-Centauriby 76561198415319416Habitable worlds of Alpha-Centauri B332 downloadsupdated 2 y ago
- 三体by 76561198323544082刘慈欣著名小说《三体》中描述了位于半人马座α的三合星系统三颗恒星在互相之间的引力下进行着完全混乱并且完全无法预测的运动,当三颗恒星互相之间距离较近并且行星穿行于三颗恒星之间时为乱纪元,此时的行星没有固定的昼夜,并且时常伴随着毁灭性的灾害,只有当其中一颗恒星将行星捕获并且远离另外两颗恒星时才会形成稳定的恒纪元332 downloadsupdated 7 y ago
- Customizable Nuke.by 76561199203111368You just need to change the Nuke radius to make it bigger or smaller, hope you ENJOY!332 downloadsupdated 3 y ago
- Sirius star systemby 76561199093760867Sirius is binary star system consisting of two white stars orbiting each other with a separation of about 20 AU. The brighter component, termed Sirius A, is a main-sequence star of spectral type early A, with an estimated surface temperature of 9,940 K. Its companion, Sirius B, is a star that has...331 downloadsupdated 4 y ago
- pulsar systemby 76561199152018760331 downloadsupdated 2 y ago
- Planets from Mass Effectby FenrirSome of the Mass Effect homeworlds sorted by mass in ascending order from the right: Rannoch (Quarian), Thessia (Asari), Earth (Human), Tuchanka (Krogan), Palaven (Turian), Irune (Volus), Deekuna (Elcor). I used radius, mass and rotational period values from Mass Effect games. I also tried to pai...331 downloadsupdated 8 y ago
- white dwarfby 76561199079959631the left over of a star white dwarf331 downloadsupdated 6 y ago
- Ora Pax systemby 76561199073309747Ora Pax is similar to our system 4 rocky planets, 4 gas giants, and a exoplanet, but it has a habital planet, a habital dwarf planet, & 2 habbital moons, all of them having has life.330 downloadsupdated 2 mo ago
- J1407B Systemby 76561199070697614Here we have the real lord of the rings J1407B with its rings about 200X the size of Saturn and having the mass of 14 Jupiters This Exoplanet will be sure bring you amazment.330 downloadsupdated 6 y ago
- No Earth!by tuppcatEarth has exploded because of the moon suddenly heating up from an solar flare directed at it! It was so hot it stopped orbiting Earth and collided causing the explosion. Humans have evacuated to Earths little brother and sister to terraform. Much like noah's Arch,Humans have bought all of the an...330 downloadsupdated 4 y ago
- DEAD EARTH AND SATURNThis is what used to be dead saturn in the picture.330 downloadsupdated 2 mo ago
- Kerbol Systemby 76561198799992304The Kerbol System.329 downloadsupdated 6 y ago
- A New Solar Systemby 76561198406399058A map New solar systemmmmmmmmmmm! Only On Steam!!!!!!!!!!!!!!! Please click Subscribe Enjoy!!!!!!!!!!!!!!!! Update added 5 planets329 downloadsupdated 5 y ago
- modded planet packby 76561198439215298my custom exoplanets329 downloadsupdated 5 y ago
- Earth with Ringsby 76561199548176692follow me :)328 downloadsupdated 2 y ago
- Two Very Large Starsby 76561199133834404you are allowed to use these stars but give me atleast some credit or risk a chance of having your sim taken down (if possible)328 downloadsupdated 6 y ago
- sternby 76561199012918954328 downloadsupdated 5 y ago
- Dinosaur Exctinctionby 7656119885364033666 Million years ago, An asteroid the size of 15 km struck what is now known as north west mexico. It traveled at 20 km/s and its name was Chicxulub.327 downloadsupdated 8 y ago
- Atmospheres on Gas Giants In A Running Simulation Testby 76561199222084292Please do note that this (to my testing) can only be done if the Gas giant does not have moons or rings orbiting it because it will ruin the Orbit of the Atmosphere body (If you find a way to get past this, let me know in the comments on the steam workshop page!) ALSO, IF YOU PLAY THE SIMULATION...326 downloadsupdated 21 mo ago
- Realistic Sol SystemHello! This is the Realistic Sol System, I recommend a FOV somewhere between 35 and 115, I would choose 45 but you could change it if you want. Also dont turn off Space Goggles. also I added some barycenters326 downloadsupdated 1 mo ago
- Titan terraformed with own weather stations and polars caps..by marcmg28Saturn and its most important moons in the earth´s orbit.325 downloadsupdated 7 y ago
- Серый карликby 76561199050076550Серый карлик - Газовые гиганты масса которых недостачная для поддержки термоядерного синтеза как в звездах, но достачный чтобы нагрется324 downloadsupdated 5 y ago
- Earth but we had a habitable moonby 76561199066623460Theia 2 has almost crashed Earth! But, missed. And now it is in a orbit closer than owr moon! as a new earth and, sun rises i end it here. maybe you could see a earthclipes!324 downloadsupdated 5 y ago
- Astroneer Solar System 2.0by 76561198447584274This is a newer and better version of my previous Astroneer Solar System (I didnt know enough to be posting on steam workshop for the last one). This one has much more accurate planets (DO NOT REPLICATE), and is much more realistic than the last one. It also features our own home solar system. Th...324 downloadsupdated 5 y ago
- A Habitable Planet Around A Gas Giantby Flavourfish 100This is a realistic proof of concept.323 downloadsupdated 8 y ago
- Universe size comparison from 2011 CQ1 to quasi starby 76561198862380676probably the largest size comparison can be before US2 lags out. anywas, in this size comparision theres a quasar a quasi star earth apophis an way more! i hope you enjoy it! if you use my objects that are not in the normal seletion. make sure to give me credit!323 downloadsupdated 6 y ago
- Realistic Earthby 76561198420320144It has a more realistic atmosphere opacity and color, and the most important thing is the clouds, i added more. CREDITS I YOU USE IT323 downloadsupdated 4 y ago
- Radiantia Gas Systemby 76561199128137328A gas planet based system with 3 gas plants and moons around 2 of them with one with a chance of life321 downloadsupdated 3 y ago
- Earth-Like Planet with Moonby jackHope you enjoy!321 downloadsupdated 8 y ago
- Realistic Saturnby supersean08321 downloadsupdated 5 y ago
- BLAZE-270 Systemby 76561199128017420A system I made named after my dog, Blaze because he is getting close to the end of his life. :(320 downloadsupdated 4 y ago
- Ancient Greek Counter-Earth Hypothetical Model 4th Century BCby 76561198376887781Hypothesized by the pre-Socratic Greek philosopher Philolaus (c. 470 – c. 385 BC) to support his non-geocentric cosmology, in which all objects in the universe revolve around a "Central Fire" (unseen from Earth and distinct from the Sun which also revolves around it). - Wikipedia This solar model...320 downloadsupdated 23 mo 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.

