Universe Sandbox mods
Universe Sandbox simulations mods
Everything filed under simulations by its own author, ordered by how much it is used.
2,225 simulations mods, most downloaded first · newest update 28 Oct 2026
2.2k simulations mods
- 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
- 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
- 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
- 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
- Pandora from Avatar(with life)by 😎Толя Солома😎I tried to make living Pandora and i did it! I took information about it on AVATARwiki. Unfortunatelly i dont know how to change colors of Polemhemeus(it looks not exactly like in movie) P.S. sorry. my english is bad. PLZ give me your opinion about it. P.S.S i will update this system with new pla...131 downloadsupdated 7 y ago
- Chat System #1by ChippySystem Made By Chat131 downloadsupdated 4 y ago
- Interstellar - Gargantua with planets!by DimTheEnderwomanSpecial thanks to Santi RP for making Gargantua. I made the planets and changed the backround and changed the mass for Gargantua because for some reason Santi made it over 7 billion suns in mass even tho its only 100 million suns. Enjoy :3131 downloadsupdated 8 y ago
- The Solar System but SolarBallsby 76561199473040583The Solar system131 downloadsupdated 3 y ago
- Battle of Endor II (Star Wars Cannon)by Bravecylinder(NOTE) This simulation Is for demonstrational purposes only. It Is not meant to be played. THE BATTLE OF ENDOR II Imperial activity suggest a massive project was being built. Knowning of this, the Rebel Alliance masses at a nearby system, known as the "Sullust" system. The Rebel Fleet launches a...131 downloadsupdated 7 y ago
- Realistest Quasarby AthelRealistest Quasar %100 Reality..131 downloadsupdated 8 y ago
- Gallifrey's Solar System (From 'Doctor Who')by thehazmobile@UPDATE: For whatever reason or other, the Solar System decided for screw up right after I submitted this after DAYS of working great. I will attempt to fix within the next few weeks; you guys are free to have a go yourselves too. Located in the Constellation of Kasterborous, Gallifrey has long b...131 downloadsupdated 6 y ago
- The Aethelgard Systemby 76561199263414212READ NOTES AND DESCRIPTIONS AT THE BOTTOM!!! The Aethelgard system is a solar system about 30 million lightyears away from our solar system, and was first discovered in 20XX, using a powerful telescope even more powerful than the JWS, and using FTL travel, Humans have successfully found the first...131 downloadsupdated 6 mo ago
- The Entity System [REDUX]by 76561198799030479This is a remake of an old system I made. It's almost entirely different from the original system, except for the concept of a living star. I hope you enjoy exploring this system. The Entity System ==== -The Entity A living Star that is able to communicate with us in Morse Code using solar flares...131 downloadsupdated 3 y ago
- Holds soler sistum come and seeby 76561199118233959the world / star is big the bhehined it is gas jiants and planets and moons come and learn more130 downloadsupdated 5 y ago
- Jacrea Systemby 76561199002704206The Jacrea System This is the Jacrea System, It is a made up system overpacked with small particles thrown from the Jacanom Planet. There are 2 stars, one orbiting the other. Jacrea A - Main Star Jacrea B - Star orbiting Jacrea A Jacrea C - A Jupiter sized planet orbiting Jacrea B130 downloadsupdated 5 y ago
- Hepitarusby RyCraft2006A planet with life around a small star near a black hole hope you enjoy :)130 downloadsupdated 8 y ago
- Alpha centauri cby Raynate2022This is not actually real this is just for entertainment Yes you can delete the sun Alpha centauri c130 downloadsupdated 6 y ago
- Sun - Earth - Lunarby 76561198337139008Just the sun, the earth and the moon in the correct distances.130 downloadsupdated 6 y ago
- Interstellarby GiuseppeThis is from a movie called interstellar130 downloadsupdated 4 y ago
- the milky wayby 76561198798888526can you find the sun?130 downloadsupdated 8 y ago
- Star Wars Planetsby 76561199003640099Make sure not to unpause130 downloadsupdated 5 y ago
2.2k simulations 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.

