Gravity Sandbox
Fling planets into orbit and watch them dance, collide and form systems. Mesmerizing.
Drag anywhere to fling a planet
Aim & pull back for power · they'll find each other
…or load a preset below
Physics
Look & feel
Tips
- · Drag slow & sideways for clean orbits.
- · Tiny bodies orbit massive ones — make a sun first.
- · Heavier bodies glow warmer.
- · Collisions merge & conserve momentum.
Why you’ll love Gravity Sandbox
Instant & free
No signup, no paywall, no limits — Gravity Sandbox works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Endlessly playable
Designed to make you lose track of time — and come back for more.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
Frequently asked questions
Gravity Sandbox is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
Never. Just open it and play — no signup, no installs, nothing to lose.
Completely. Gravity Sandbox runs entirely in your browser (client-side). Nothing you type, upload or generate is sent to our servers, so your data never leaves your device.
No. It works instantly in any modern web browser — Chrome, Safari, Edge or Firefox — on desktop and mobile.
Yes. The tool is fully responsive and touch-friendly, so it works great on phones and tablets as well as computers.
Global Maple System — a software & AI studio. We built Gravity Sandbox (and 200+ other free tools) to show what we can do. Need something custom built? We’d love to help.
More Toys
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We built this. We can build yours.
Gravity Sandbox is one of 200+ free tools from Global Maple System — a software & AI studio. Need a website, app, AI agent or automation? Let’s talk.