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
- Habitable Planets Pack 1A pack containing 4 habitable objects: -Mercury -Venus -The Moon -Mars NOTE: Several simulation setting have been changed to display this without problem. As a result, these planets may become uninhabitable in other simulations. (e.g. The Moon will lose vegetation due to rising temperature)136 downloadsupdated 3 y ago
- Symetrie of the earth and the moonby 76561198445742124Its beautiful135 downloadsupdated 5 y ago
- Tatooine From Star Warsby 76561198989337400@This took a long time to do this. We tried making it as realistic as possible. I hope you guys like it! :D135 downloadsupdated 6 y ago
- Mr.Polp (Smallest Red Giant)by 76561198866428675Mr.Polp Known Halley's Great Fireball Haves A Gas Giant Called Mr.Polp b 11 LY From Neptune Mr.Polp Discorvey 1815 Halley Days:Like Halley's Comet Mr.Polp In 3600 Years Well Become A Super Red Giant With 1.88 AU135 downloadsupdated 8 y ago
- Milky Wayby WAFSackThe Milky Way for anybody who needs it for their simulations. I deleted Andromeda from the galaxy collision.135 downloadsupdated 8 y ago
- The Quartzil System (Update) [Lag Fix]by 76561199443622746Destroy it, Add to it, Change masses. all up to you. Both Lore, And Small details plus a whole 2 new planets with an actually good orbit. One of the new planets is a direct call to KSP. (Goated Game) I removed and changed a bunch of settings on the planets to reduce lag but keep the initial model...135 downloadsupdated 4 mo ago
- 3 Suns Zodiac Challengeby ♥ XTS ♥3 solar system beginnings. I found 3 stars that showed their stats to be similar to our sun in size in the zodiac visual. I deleted all other stars and added copies of some of our planets. Used Auto Orbit. To come: More Variables w/ Planets. Names kept for clarification. The Three Stars are: HR 4...135 downloadsupdated 4 y ago
- minecraft sysemby Tangle Boi135 downloadsupdated 8 y ago
- realistic neptune with its ringsby 76561199805248699just a realistic neptune with rings135 downloadsupdated 7 mo ago
- more star wars planets.by 76561199029478800@the planets are, Hoth, Mandalore, Utapau and Naboo they arent the exact modols but i just want to say i tried my best at making these planets. hope you enjoy my hard work. (more star wars planet coming soon)135 downloadsupdated 6 y ago
- M33.013406.63by 76561199137365338It is the brightest star among the known stars. It is brighter than the previously known R136a1. It is a spectral type O blue supergiant that shines bright and blue. You may save this celestial body. Because I am not an American, I used a translator, so my English may be imcomplete.135 downloadsupdated 6 y ago
- The Solar System (Warhammer Fantasy)by The Guy With the HatThis the accurate (mostly) Solar system of Warhammer Fantasy battle, all of the bodies (except for Morrslieb because it kept getting kicked out) are accounted for with their lore-accurate orbits. Praise Sigmar!135 downloadsupdated 6 y ago
- Alpha Centauri System V2by 76561199260769441New Features: 3 new planets135 downloadsupdated 5 y ago
- Neptunian Guy's Birthday System!by 76561199423757500TURON - a typical early-F-type main sequence star with 15 planets and 5 dwarf/minor planets. TORRIA - a lava planet that takes less than a week to orbit Turon. KYPORE - a hot Neptune that has lost all but two of its moons. HIGSSEA - a hot ocean planet with a greenhouse atmosphere similar to a mil...135 downloadsupdated 2 y ago
- Alien Invasionby NCDinoWe are doomed the Energy from the mother ships have been launched we are doomed 1 over North America another over europe one over East Aisa and One over Antarctica to destroy the southern hemosphere and clean up any Stragalers Best done while listening to Country Roads :)!!!135 downloadsupdated 8 y ago
- SimpPlanet SIMP, 13,4 M Jupiter 2,18 R Jupiter Inspired by Solarballs!135 downloadsupdated 3 mo ago
- lowmolt binary black holestwo black holes135 downloadsupdated 2 mo ago
- something i madeby 76561199117409074eh just I made it is realy it hope you like it134 downloadsupdated 5 y ago
- Fantasy Atares Solar Systemby EmptyNinacAtares Solar System in a other way134 downloadsupdated 5 y ago
- Kerbal systemby 76561199122341910@hello im jake and im the maker of system so have fun in it now be134 downloadsupdated 6 y ago
- Brown Dwarf Systemby Hamster lordBrown Dwarves are basically half-stars and half gas-giants. They're basically failed stars. It is usually formed when a Gas Giant does not 'properly' transform into a star because of not enough heat, mass, and gasses.134 downloadsupdated 7 y ago
- Size Comparison 2022by cola the ghost134 downloadsupdated 5 y ago
- Terraformed Sunby ajnunez89Welcome to my terraformed sun! Honestly, way easier than I thought, only took a couple hours. Unfortunately, the life likelihood is pretty low, but honestly, I think I could live on this planet. If you enjoy this please consider subscribing.134 downloadsupdated 15 mo ago
- Halo Groombridge 34 System - Station Delphiby Sublight//MiniEV0A recreation of the Groombridge 34 system from the Halo universe, containing research station Delphi. The station is represented by the Juno space probe, and the system itself is as of after the station was abandoned in orbit around a frozen moon. The rest of the system is based upon my imaginati...134 downloadsupdated 8 y ago
- Realistic Neptune & Uranusby 76561199369611529So Here i Have A Realistic Neptune And Uranus So On Neptune i Modded it to have the Negative Contrast Effect And its right Beside the Default Neptune So You Can See The Difference And the uranus Was Pretty Easy To make with 1 band and a very pale cyan And There is the Default Uranus Please Do Not...134 downloadsupdated 4 y ago
- The moon woke upby 76561199369048498134 downloadsupdated 15 mo ago
- TON 618 GalaxyBecause quasars were not recognized until 1963, the nature of this object was unknown when it was first noted in a 1957 survey of faint blue stars (mainly white dwarfs) that lie away from the plane of the Milky Way. On photographic plates taken with the 0.7 m Schmidt telescope at the Tonantzintla...134 downloadsupdated 5 y ago
- SpookVooper Packby 76561198969308746Insightmission-10133 downloadsupdated 7 y ago
- My Solar System Part 10by 76561199092298937A new age has begun and it is amazing. their star could last forever and a new binary. I wonder what it could be and there might be a joke planet somewhere. This is for celebrating the Dart Mission. Also I am sorry for the long wait. Ive just been doing a whole bunch of school.133 downloadsupdated 4 y ago
- Lunar Eclipseby 76561198858523815Some kind of simulation of a Lunar Eclipse.133 downloadsupdated 7 y ago
- The JET Star (FULL EDITION) 8600 Years Laterby 76561198866428675High Damage Means -52 HP Medium Damage Means -10 HP Normal Damage Means -1 HP I Make All These Md Md Means Mod Or Moddings133 downloadsupdated 8 y ago
- Custom Solar System Objectsby Danny_Does_DrawingsPluto with a white atmosphere. Mars with dust storms. Venus with more yellow.133 downloadsupdated 8 y ago
- Ninja Jupiterby 76561199191692650NOTE: The red spot wont disaper133 downloadsupdated 5 y ago
- Super Realistic Gas Giantby 76561198989630031@A Super Banded Blue Gas Giant it's Name is SDSS J4654-3244ab133 downloadsupdated 6 y ago
- The Kim Jong Bombby Johnny Apocalypse!In response to low approval ratings and not wanting to appear impotent, The President decides to pre-emptively attack North Korea using his favorite doomsday device, the 'Big Boy.'133 downloadsupdated 8 y ago
- Terraformed Marsby 76561198345471841The terraforming of Mars is a hypothetical procedure that would consist of a planetary engineering project or concurrent projects aspiring to transform Mars from a planet hostile to life to one that could sustainably host humans and other lifeforms free of protection or mediation. The process wou...133 downloadsupdated 11 mo ago
- The Kessel System (Star Wars Legends)by Bravecylinder(NOTE) This simulation Is for demonstrational purposes only. It Is not meant to be played. The Kessa System was a star system located In the Outer Rim of the galaxy. The main planet "Kessel" was a Spice mining, and prisoner planet. Prisoners would be sent here to mine. Spice was another word for...133 downloadsupdated 7 y ago
- Theia and Earth impactby 76561199062517198Millions of years ago, Theia, a planet in our past solar system, basically, the size of mars, collide with earth, when earth was a fire ball.132 downloadsupdated 4 y ago
- the gallifreyan systemby 76561198375874432the pu anee gallifreya(sun of gallifrey) system from before (and way way way after) the time war PAUSE THE SIM TO EXPLORE! (the orbits get messed up if you un pause it) includes: two systems orbiting each other sys 1: 1 star 1 gas giant sys 2: 3 stars planets: carn gallifrey chatchitichifrey-chat...132 downloadsupdated 8 y ago
- Planet Pack 3by WezAdds 5 More planets.132 downloadsupdated 7 y ago
- Realistic Saturnby 76561198420320144It has more bands and it's more realistic. ;)))))))) CREDITS IF YOU USE IT132 downloadsupdated 4 y ago
- Oort Cloudby dr_nefarioThe Oort Cloud is a theoretical cloud of icy planetesimals proposed to surround the Sun at distances ranging from 2,000 to 200,000 au (0.03 to 3.2 light-years). Proposed in 1950, the Oort cloud could harbour up to 10 trillion comets, ranging from 0.3-5 earths of mass.132 downloadsupdated 4 y ago
- Nephtegawby 76561198989889301Nephtegaw is a super neptune rogue planet with rings, the planet's temperature is about 6000 degrees celsius. NOTE: None of the objects shown in this system are real, this is not made to offend or hurt anyone in anyway.132 downloadsupdated 8 mo ago
- WR 102 - The Hottest Known Starby 76561198798610861credit where credit is due132 downloadsupdated 6 y ago
- Realistic uranus system@All major moons coloured132 downloadsupdated 6 y ago
- The Full Solar System.Here is the full Solar System made By LD & HD Space goggles are off, enjoy.132 downloadsupdated 3 mo ago
- The Retta systemby 76561199213928690Its a series of planets orbiting a super large blackhole called retta, all the planets are stable and in good condion. There are 8 planets in the system with 3 of them having moons. if youre looking for the 8th planet you have to zoom out some more131 downloadsupdated 23 mo ago
- Costum planet packby Byllover 50 costum planets131 downloadsupdated 6 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.

