Universe Sandbox is a realistic physics-based space simulator that allows you to create, destroy, and interact on an unimaginable scale.
It merges real-time gravity, climate, collision, and material interactions to reveal the beauty of our universe and the fragility of our planet.
Universe Sandbox includes the desktop version and a VR mode with support for the HTC Vive, Oculus Rift+Touch, and Windows Mixed Reality.
Simulate Gravity
N-body simulation at almost any speed using Newtonian mechanics. Real science, real physics, no supercomputer required.
Collide Planets & Stars
Epic, mind blowing collisions of massive planetary bodies that leave behind molten craters.
Create Your Own Systems
Start with a star, then add a planet. Spruce it up with moons, rings, comets, or even a black hole.
Model Planetary Climate
Watch sea ice grow and recede with the seasons because of a planet’s tilt - change the tilt and change the seasons. Or move planets close to a star and see the oceans boil away as the surface heats up.
Learn more...
Supernova a Star
Watch a supernova unfold by colliding two stars, cranking up their mass, or making them explode at your whim.
Explore Historical Events
Hitch a ride with spacecraft including Juno and New Horizons, or view a total solar eclipse.
Throw Planets in VR
Just grab and fling.
And more...
Build and terraform planets with 12 materials, including water, oxygen, & carbon dioxide
Additional notes: For VR, see recommendations from your headset manufacturer
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2025-12-08
Dive Into 2025’s Most Addictive Video Games – Part 1
It is already the month of December and 2025 is nearly done, however there have been some great titles all throughout the year and we decided to make a definitive list for some of the most addictive video games we got during the year! We separated it into 2 dozens of Steam games in almost all of the main gaming genres, so there should be something for everyone to enjoy on it! We hope you like it and let’s directly dive right in the action with the first part of our list!
As the year is almost done, we are getting ready for some of the biggest stories of 2025, in this edition of our YUPLAY monthly recap we are going to inform you about the latest information regarding a few of the most demanded upcoming titles this season, with their respective exciting reveals, DLC launches and even one massive AAA hit delay we all dread. As for the hardware department, there is also quite a bit of new tech gadgets…
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
Entering some text requires manually invoking the on-screen keyboard
This game requires manual configuration of graphics settings to perform well on Steam Deck