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Mods: Universe Sandbox

Mods for your games from Steam Workshop and Source.

Counts describe mods indexed by GameRadar. Workshop popularity is measured in subscriptions.

Indexed mods: 639

Azarera Remastered!

Universe Sandbox

WARNING: DO NOT PRESS PLAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WARNING #2: YOU MUST VIEW THIS IN UPDATE 32.3.2, as goes for all of my simulations, UPDATE 34 BREAKS THIS SYSTEM, LIKE WITH MANY, MANY OTHER SYSTE

Other
3subscriptionsno growth · 44 hr. agoUpdated: Sep 19, 2026
Author: 76561199148725797

球系

Universe Sandbox

我是中国人

Other
3subscriptionsno growth · 44 hr. agoUpdated: Oct 23, 2026
Author: 76561198442715878

Upper Bound Limit Of A Planet Killer Asteroid Hitting Earth

Universe Sandbox

Ummmm... what is that??? ummm... ........!!!!!!! wait.. nooooooooo its a planet destroyer asteroiddddd aaaahhhhhhhhhhhhhhhhhhhhhh runnnnnnnnnnnn ahhhh- *gets blinded* noooooo ahh- *gets hit by a 7 atmosphere pressure sho

Other
3subscriptionsno growth · 21 hr. agoUpdated: Oct 25, 2026
Author: 76561199236442092

Atlas System HIGH PERFORMANCE REQUIRED!!!

Universe Sandbox

Welcome to the Atlas System! Atlas a star 6.5 times bigger than our own Inustas Major and Minor: Inustas Major formed first and was originally round but then a collision of a planet around the size of the Earth hit Inust

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 21, 2026
Author: 76561199224873795

K5V

Universe Sandbox

Orange Dwarf system

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 22, 2026
Author: 76561199179133253

Alpha Cygnis

Universe Sandbox

El Infierno En El Espacio, El Sistema Solar Mas Raro Del Universo Los Planetas Estan Tan Cerca De Su Estrella Que Literalmente Se Estan Derritiendo Poco A Poco Y Mientras El Planeta A Ya No Existe Por Que Estaba Tan Cerc

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 24, 2026
Author: 76561199503447585

THEORY 1, How Earth formed.

Universe Sandbox

WHAT IF: Earth was a formation that happened on accident? The first is Neluss A, the second, Neluss B. The collision created asteroids that would later be Earth Trojans.

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 26, 2026
Author: 76561199390227493

Earth.

Universe Sandbox

Earth, Moon and The Sun

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 26, 2026
Author: 76561199817220519

Sedna passes Pluto

Universe Sandbox

Ceres crashed into Pluto's eye, later, someone else arrived, Sedna was awakened too, and was coming this way, not to crash into Pluto, just passing by, im wondering where he's headed...

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 26, 2026
Author: 76561199071359274

the goldity system

Universe Sandbox

(please do not unpause the sim, im not sure how stable everything is) welcome to the dying Goldity system, its star has reached the final phase before it ejects its outer layers, the red giant phase, look around and expl

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 27, 2026
Author: 76561199567046653

Solar System+Hypothetical planets&moons

Universe Sandbox

Our Solar System is home to Eleven planets (five terrestrial inner planets and five giant outer planets), the asteroid belt between Mars and Jupiter, and the trans-Planetian X objects beyond Planet X. Notable dwarf plane

Other
3subscriptionsno growth · 45 hr. agoUpdated: Sep 30, 2026
Author: 76561198081370540

WD J1330+6435, The Greenest Star (New Discovery)

Universe Sandbox

Radius copied from WD J1330+6435. WD J1330+6435 discovered in 1999 is a green tinted star in the constellation Draco, north east of Thuban. The sodium atoms and it's density are bombarded by helium atoms, giving it's gre

Other
3subscriptionsno growth · 44 hr. agoUpdated: Oct 22, 2026
Author: 76561198125997683

The Arrival of the star dwarfs

Universe Sandbox

The Black and White Dwarfs arrived at Makemake's orbit while Sedna arrived at Earth's orbit to defend it from other cosmic harm, which is why it was awakened in the first place

Other
3subscriptionsno growth · 21 hr. agoUpdated: Oct 2, 2026
Author: 76561199071359274

Hotie system

Universe Sandbox

Enjoy this System! Fun fact: This System is bigger than Segue 2

Other
3subscriptionsno growth · 21 hr. agoUpdated: Oct 5, 2026
Author: 76561199843843045
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