How do you break a planet in Cosmic Sandbox?

You need to increase the velocity of an incoming asteroid or moon before slamming it into your target. High-speed impacts force the internal pixel layers to shatter.

Can I play Cosmic Sandbox on my phone?

Yes, it runs on mobile browsers without any issues. The touch interface makes placing planets and adjusting their initial spin even easier than using a mouse.

Is Cosmic Sandbox free to play?

Yes, Cosmic Sandbox is completely free to play on Nub Games. Optional in-app purchases are available. No download or registration required.

Can I play Cosmic Sandbox on mobile?

Cosmic Sandbox works on both desktop and mobile devices. Best played in landscape mode.

What age rating is Cosmic Sandbox?

Cosmic Sandbox has a content rating of 6++. It is suitable for all ages.

Play Cosmic Sandbox Online for Free

You just spent ten minutes building a perfect solar system only to watch it get shredded by a stray rogue asteroid. It’s a total disaster, but seeing the internal layers of a planet scatter across the screen is weirdly satisfying. You can play Cosmic Sandbox online right now without any pesky installs. It’s completely free in your browser, so you don't need to sign up. Explore the simulator genre by tossing mass into the void to see what sticks.

Key Features

Layered destruction: Planets possess a distinct crust, mantle, and core. When a collision hits, the outer shells peel away to reveal the hot center.
Gravity physics: Every object exerts a pull on its neighbors. Create stable orbits or watch everything spiral into a massive, pixelated black hole.
Infinite canvas: Space is massive. You have plenty of room to build massive systems without running out of screen.
Pixel aesthetics: Everything is built from individual blocks. You see exactly where the impact point was based on the debris left behind.

How to Play

Cosmic Sandbox: Setting the scene

Drag and drop your celestial bodies from the sidebar onto the canvas. Use your mouse or touchscreen to set the initial velocity and rotation. You need to learn how to play Cosmic Sandbox by balancing mass against distance. Gravity is a fickle beast. Start small or your screen becomes a cluttered mess.

Mastering Cosmic Sandbox controls

Adjust your view by clicking and dragging to pan around the simulation. The Cosmic Sandbox controls feel a bit floaty when you try to zoom in tight on a collision. Don't worry about the jittery physics. The most common mistake is placing planets too close together, which causes them to slingshot out of your frame immediately.

Who Should Play Cosmic Sandbox?

You enjoy messing with gravity just to see how much chaos you can cause in five minutes. This is for the person who cares less about stability and more about watching a planet get vaporized by a sun. It is rated 6+, so keep the black hole experiments relatively contained.