Mods / Simulations

• GGargantua Systemby 76561199157167187GARGANTUA FROM INTERSTELAR!!. Interstellar is a movie that I recomend to watch. So here is the Gargantua system.708 downloadsupdated 5 y ago
• BBrightest Stars viewed from Earth in Order!by SpaceManSamList of the Brightest Stars! (Apparent Mag)707 downloadsupdated 8 y ago
• PPlanet pack 1by 76561199195510682705 downloadsupdated 3 y ago
• MMy solar system 25by Un0riginal00this is my solar system that i made. Do whatever you want with it702 downloadsupdated 4 y ago
• TTerraformed UY Scutiby Chocice75I had to modify this one a LOT. It was WAY too big to be a planet at first.701 downloadsupdated 8 y ago
• HHoln Systemby 76561199090641459The Holn System The Holn System is designed so that each world and system as a whole could have realistically happened each with their own dynamic history and geology. Not all description could fit, check ingame object descriptions for worlds around Hazel. ------------------ The Stars Holn Holn t...701 downloadsupdated 4 mo ago
• Ttres 2bby Tangle BoiTrES-2b (TrES-2 or Kepler-1b) is an extrasolar planet orbiting the star GSC 03549-02811 located 750 light years away from the Solar System. The planet has been identified in 2011 as the darkest known exoplanet, reflecting less than 1% of any light that hits it.700 downloadsupdated 8 y ago
• NNuol, Kyranion Solar systemby 76561198351294302@The nuol solar system is home to many planets, dwarf planets, 3 intellegent races lie in the solar system, The kyranions of pilitanteu, the world of extreme, exotic forms of life, interested into interplanetary travel. Acredaaions of Irbius, a world of volcanoes, rigid terrain, and Archaoligy in...699 downloadsupdated 6 y ago
• RRealistic Earthby 76561198880449275Realistic Earth for community test version ONLY Do not steal or repost this item, thanks699 downloadsupdated 6 y ago
• MMadplanetguys Custom Galaxyby 76561198880449275MPGs galaxy from the youtube series where viewers request planets to be added in! If you want a planet adding, join my discord and request it there in the chat! Give it an upvote on steam if you enjoy, as it will help more people find this item! My YouTube Join My Discord Server <Here to chat wit...698 downloadsupdated 5 y ago
• SSTARSby 76561198971148520697 downloadsupdated 7 y ago
• DDefault Planet 9 REMASTERED!by 76561198880449275a remastered version of a random spawned planet 9. Do not steal or repost this thanks! Give it an upvote on steam if you enjoy, as it will help more people find this item! My YouTube Join My Discord Server <Here to chat with me or the community!695 downloadsupdated 5 y ago
• FFlat Earth... yeah...by Chocice75Somehow, Earth was squished so much that it became flat. All of the water fell off due to this. (also, it's just a retextured Phantom Zone.)695 downloadsupdated 7 y ago
• Bbig bangby 76561199016497556universe birth695 downloadsupdated 7 y ago
• TTarto Star Sytemby nikofbeanHello there, before starting, this is a system very focused on realism and visuals, so to appreciate them, be sure to land on some planets you find interesting for a great view! Tarto A K-type star that has around itself many roaming planets, each one with different properties, some having moons,...692 downloadsupdated 19 mo ago
• CCycle and Proxy Systemby 76561199203567526Welcome to the Cycle and Proxy System and have fun exploring the planets and moons691 downloadsupdated 4 y ago
• 33I ATLAS flyby of the Sun in 2025by 765611990039337433I ATLAS, also known as C 2025 N1 (ATLAS) and previously as A11pl3Z, is an inbound interstellar comet discovered by the Asteroid Terrestrial-impact Last Alert System station at Río Hurtado, Chile, on 1 July 2025 when it was 4.5 AU (670 million km; 420 million mi) from the Sun and moving at a rela...689 downloadsupdated 16 mo ago
• TTursa Wiersaby mercilessraven613Lime-Red-Yellow???? Backrond688 downloadsupdated 2 y ago
• PPluto is now the size of 2 or 20million times the size of the milky way sooooby 76561199177435300ummmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm Yeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa687 downloadsupdated 5 y ago
• AArmatis Systemby 76561199808465939My first System! Welcome to the Armatis System, 11 Planets to discovers! GAS GIANT DONT HAVE MOON DUE TO PERFORMANCE REASON687 downloadsupdated 13 mo ago
• CChristmas System 2023by Neptunian GuyMerry Christmas!687 downloadsupdated 3 y ago
• TTerraformed Mars (50%)by KOMAINA slightly terraformed Mars with a red surface, oceans, a more clear but still martian atmosphere and with no human cities. - - - - - - - - - - Terraformed Bodies (50%): Terraformed Sun (100%):687 downloadsupdated 8 y ago
• BBlack hole Sunby 76561198989630031@Sun is a Black hole687 downloadsupdated 6 y ago
• BBlue Star.by jeevacationHope you enjoy! Rainbow Star System Coming Soon!686 downloadsupdated 8 y ago
• OOur System realby 76561198828469498with astriod belt kupier belt and oort cloud684 downloadsupdated 8 y ago
• BBorderlandsby 76561199105511871This is the Borderlands planets if they were all in one solar system!684 downloadsupdated 5 y ago
• TToloaby 76561199109764130Welcome to taloa683 downloadsupdated 5 y ago
• SSolar subby 76561198438587853It's a sub, of the solar system. Non-modded, just type in some slider or slide with other slider.683 downloadsupdated 5 mo ago
• FFuturama Solar Systemby 76561199686975867A Futurama Style Cartoon Version Of All The Planets In Our Solar System682 downloadsupdated 2 y ago
• Tthe Heladonid Clusterby Blox2007 (the Last Fluorican)welcome to the Heladonid Cluster, a cluster of stars located within the Orion Arm owned by the Monarchist Republic of Kerbin which is one of the more peaceful Nations amongst the ever changing politcal landscape of the rest of the Orion Arm and the neighbouring Galactic Arms. the Heladonid Cluste...681 downloadsupdated 16 mo ago
• TTiny Solar Systemby RMazerThis is a small solar system that is actually only a bit over 2500km. This is a really rare star that looks almost like a white dwarf but is yellow lol. Anyway have fun and enjoy!679 downloadsupdated 7 y ago
• IIf venus had life.by 76561199323548513I spent a lot of time doing this.678 downloadsupdated 3 y ago
• PPSR B1257+12 star systemby 76561199093760867PSR B1257+12 is a millisecond pulsar located 2,300 light-years from the Sun in the constellation of Virgo, rotating at about 161 times per second, it is nicknamed Lich. The pulsar has a planetary system with three known planets, named Draugr, Poltergeist and Phobetor respectively. They were both...677 downloadsupdated 4 y ago
• TTerraformed Gliese 876 dby Chocice75This planet seems to have high mountain ranges, indicated by the snow which spawned when I enabled the climate.674 downloadsupdated 8 y ago
• NNr]orila Systemby 76561198332161883WARNING: THIS SYSTEM HAS LOT OF STUFF IN SO IT MAY RUN SLOW IF YOU DONT HAVE A GOOD COMPUTER! The Nr]orila System Is Planetary System On The Outer Edge Of The Milkyway Galaxy. it Consist of 22 Planets in MOSTLY Stablie Orbits. Orbiting a Star About 150% More massive then our sun. There Is Thought...671 downloadsupdated 5 y ago
• RRotby 76561198961422220One day Jon created Rot out of simple space elements. Jon made sure Rot was in just the right position to live comfortably. Jon noticed Rot was lonley, so Jon went off to work. He worked for days perfecting the perfect friend. Then Rot got His faithful loylal companion, Tix, witch stayed with Rot...670 downloadsupdated 6 y ago
• 1100+ Banded Neptune!by 76561199029457294so yea i wanted to make neptune more band670 downloadsupdated 4 y ago
• PPlanet + Gas Giant Packby WezAdds 6 New Planets/Gas giants/ Asteroids to the game. Objects are alligned in a 1D Radius Chart.668 downloadsupdated 7 y ago
• Eempire of hundredsby Ayev234the whole soler system with only life667 downloadsupdated 5 y ago
• BBasic Habitable Planetby 76561198430690243Basic Habitable Planet.667 downloadsupdated 7 y ago
• SSDSS J010448.46+153501.8 (LARGEST PLANET)by dr_nefarioSDSS J010448.46+153501.8, discovered in 2017, is a huge brown dwarf located 750 light years from earth. It is over 9 wider than Jupiter, making it the largest planet ever found. It is also the heaviest brown dwarf, estimated at around 90x greater than jupiter's, but shown at only 78.5 jupiters he...665 downloadsupdated 6 y ago
• SSaturn 100 % Terraformby mecki83663 downloadsupdated 19 mo ago
• RRealistic Neptune with ringsby 76561198420320144RINGS OF NEPTUNE!!! CREDITS IF YOU USE IT!663 downloadsupdated 4 y ago
• CCome look at disby BUCKETTS661 downloadsupdated 23 mo ago
• IIntersellar black hole systemby John FalloutThis is the black hole system from the movie gargunta Millers planet Mann Planet and even Edmund are all inclulded661 downloadsupdated 4 y ago
• TTrappist-1 System (Made with terraforming update)by 76561199206977606Trappist-1 System The Trappist-1 system, named after the trappist telescope contains 7 planets. The inner planets The inner planets (b and c) are heated and somethimes really dense.Their atmosphere contains mostly carbon dioxide, heating them even more. The central planets But the central planets...660 downloadsupdated 3 y ago
• Tthe Glroua + Luer systum!by 76561199435990311S- Glroua- a green star thats 2.52 sun masses. S- Luer- a sun like star. P- Ember- a lava planet M- Silance- a moon being torn apart by Ember. M- Eternus- a moon similer to Ember. P- Satunus- a desert planet with 2 RINGS! M- Titanum a desert moon P- Planet 4546B- seems familer... {how did that ge...659 downloadsupdated 2 y ago
• SSolarballs colectionby 76561198441626813If you use these please give credit658 downloadsupdated 15 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.