Mods / Simulations

• RRed Giant Sun (Phase 1)by dr_nefarioAccording to stellar physics, in 7 billion years, the sun will expand to an enormous size, around 0.7 AU, destroying Mercury, and almost destroying Venus. Have fun watching the planets roast ^-^.347 downloadsupdated 4 y ago
• MMy Solar Systemby 76561199023623853I Wonderfull Solar System To Add Stuff To Or DESTROY >:)346 downloadsupdated 5 y ago
• TThree-way Galaxy Collisionby Chocice75Three galaxies colliding with each other.345 downloadsupdated 7 y ago
• AArinu Systemby 76561198330129842A system with 5 planets and a star in its main-sequence. The first planet is a basic planet, nothing is going on there expect it being boiling hot. The second planet on the other hand, has life. It is one of the lucky few, in a perfect environment for life. The moon is bombarded from the close-by...344 downloadsupdated 3 y ago
• 551 Pegasi star systemby 7656119909376086751 Pegasi (also called Helvetios) is a Sun-like star located 50.6 light-years from Earth in the constellation of Pegasus. It was the first main-sequence star found to have an exoplanet : 51 Pegasi b (also called Dimidium) 51 Pegasi b was the first exoplanet to be discovered orbiting a main-sequen...344 downloadsupdated 4 y ago
• CCycle Resilient Binary Systemby nikofbeanEven the most coarse of the worlds can live... Welcome to this binary star system, inhabited by mid-techonology beings that have just discovered the art of spacecrafts, space, and exploration, with their world soon dying out, solutions need to prosper between a system full of dangers. The Draw..?...344 downloadsupdated 4 y ago
• PPSR B1620−26 star systemby 76561199093760867PSR B1620−26 is a binary star system located at a distance of 12,400 light-years in the globular cluster of Messier 4 in the constellation of Scorpius. The system is composed of a pulsar (PSR B1620−26 A) and a white dwarf star (WD B1620−26, or PSR B1620−26 B). The system is also confirmed to have...344 downloadsupdated 4 y ago
• KKerbal Solar System (Kerbal Space Program)by 76561198858282308The planets have been renamed to mactch their in-game counterparts and Uranus and Neptune have been removed (they have no in-game counterparts).344 downloadsupdated 5 y ago
• TTerraformed Basketballby ajnunez89Yep, terraformed basketball! I thought I took way to long to make this, but here it is! Anyways, hope you enjoy! The only downside is that this is made up of 3 parts: terrain, oceans, and atmosphere beacuse you can't put atmosphere, oceans, or terrain on basketballs. So anyways, subscribe for more.343 downloadsupdated 15 mo ago
• SSize Comparison - Reimaginedby ajnunez89My first simulation on the workshopwas my Universe Size Comparison. Well, I decided to make a new size comparison with realistic colors, nebulae, and most importantly no lag. Check out my Larger Than The Universe Size Comparison! Subscribe for more!343 downloadsupdated 15 mo ago
• AAn Unnamed Solar Systemby alientrailsYou Can Give Them Names If You Want Or Give Me The Names For The Star, Planets, Gas Gaints, And Some Moons!342 downloadsupdated 4 y ago
• OOuter Wilds Solar Systemby 76561198855620022The Outer Wilds Solar System in Universe Sandbox 2! Sort of342 downloadsupdated 7 y ago
• OOuter Wildsby ren kSpoilers for Outer Wilds342 downloadsupdated 5 y ago
• FFIRE EARTHby 76561198799258657IS SOOOOOOOOOOOOO HOT IN HERE342 downloadsupdated 5 y ago
• TTerraformed Berandby Chocice75I terraformed this planet for a YouTube video.341 downloadsupdated 8 y ago
• Ssolar system BUT every planet is randomby 76561199814533959Hi here (rock planet is random rock planet, gasgiant is random gas giant341 downloadsupdated 11 mo ago
• Kkepler-80 systemby rhys.agdamag341 downloadsupdated 5 y ago
• JJ1407bby Neptunio40,000 ring partices341 downloadsupdated 4 y ago
• MModded Fire Planets Pack V2by ByllAll Made By Me You Can Use If You Copy & Paste This: "Created By Omega Space Education"341 downloadsupdated 3 y ago
• KKepler-70 (KOI-55) star systemby 76561199093760867Kepler-70 is a star in the constellation Cygnus with an apparent visual magnitude of 14.87 and is 4200 light-years away. A subdwarf B star, Kepler-70 passed through the red giant stage some 18.4 million years ago. In its present-day state, it is fusing helium in its core. Once it runs out of heli...340 downloadsupdated 4 y ago
• EEteris Star System (The End)by nikofbeanThe sequel to Eteris Star System (Future) There is no escape, There is no escape, There is no escape, There is no hope. EACH PLANET IS DESTROYED! But this time... no hope ! It's all gone. "Nooooooooooo!" - Totally not me "I'm dying now fr, this is too good." - Not me Explore this dead system, and...340 downloadsupdated 4 y ago
• TThe Milky Way From Sporeby JayPix1992The Spore Version of the Milky Way Galaxy.340 downloadsupdated 7 y ago
• BBrown Dwarf Templateby 76561198880449275Brown Dwarf Template by me (Madplanetguy) If you do use this in any simulations, give credit in the simulation info pannel, thanks If you like this item, drop a follow on Steam and visit me on Youtube! I will make more stuff like this!340 downloadsupdated 6 y ago
• {{OUTDATED} KSP 2 Debdeb System Recreationby 76561199445637055play the second version unless you really wanna see gup for some reason this is a recreation of the unadded ksp 2 debdeb system a lot of it was made from ksp 1s promised worlds mod this system includes : Charr, Ovin, Gurdamma, Lapat, Glumo, the moons are : Donk , Gup (around gurdamma), Noj, Merbe...339 downloadsupdated 9 mo ago
• UUltra-Realistic 55 Cancri eby ByllTook Me Several Hours So Please Do Not Steal (:339 downloadsupdated 2 y ago
• WWolf packby kwindl339 downloadsupdated 7 y ago
• TThe 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
• SSolar 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
• TTON 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
• NNeutron 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
• EEpic 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
• TThe Big Bangby 7656119843570309813.5 billon years ago: THE BIG BIG BANG335 downloadsupdated 8 y ago
• Rrouge planets from solar ballsby 76561198887230713335 downloadsupdated 11 mo ago
• AAfter 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
• Sskyes 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
• TTHE 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
• DDeath Star and Alderaanby 76561199077088098Death Star explodes Alderaan334 downloadsupdated 5 y ago
• TThe 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
• IInteresting 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
• Aa systemby 76561199097455569332 downloadsupdated 2 y ago
• HHabitable Alpha-Centauriby 76561198415319416Habitable worlds of Alpha-Centauri B332 downloadsupdated 2 y ago
• 三三体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
• CCustomizable Nuke.by 76561199203111368You just need to change the Nuke radius to make it bigger or smaller, hope you ENJOY!332 downloadsupdated 3 y ago
• SSirius 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
• Ppulsar systemby 76561199152018760331 downloadsupdated 2 y ago
• PPlanets 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
• Wwhite dwarfby 76561199079959631the left over of a star white dwarf331 downloadsupdated 6 y ago
• OOra 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

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.