Looking for a ball bouncing simulator you can use right in your browser? ViralBalls is a free, no-download physics sandbox that lets you watch (and record) balls bouncing inside concentric circles, with full control over gravity, elasticity, colours, and effects.
What Is a Ball Bouncing Simulator?
A ball bouncing simulator is a physics sandbox that models how a ball moves under gravity, bounces off surfaces, and interacts with obstacles. At its simplest it's a circle falling and rebounding. At its most complex it's a chaotic dance of colour, sound, and destruction, which is exactly where ViralBalls lives.
Unlike downloadable physics engines aimed at game developers, ViralBalls is designed for anyone who wants to watch, customise, and share satisfying ball physics, whether you're a content creator, a teacher, or someone who just finds it relaxing.
Key Features
Realistic (and Tuneable) Physics
Adjust gravity from feather-light to crushing, tweak bounciness from a dead thud to a super-ball, and enable increasing bounciness so the ball accelerates over time until it smashes through walls. Every parameter updates in real time, no restart needed.
10 Unique Game Modes
ViralBalls goes far beyond a simple bouncing ball:
- Classic: the original ball-escapes-the-circles experience. Walls have gaps; the ball must find them.
- Accumulation: new balls spawn on each wall hit, filling the arena with dozens of bouncing objects.
- Multiply: the ball splits into multiple copies on impact, creating fractal-like chaos.
- Lines: horizontal line walls replace circles for a different collision geometry.
- Shatter: walls are made of individual brick-like segments. Each segment has HP and shatters independently.
- Color Match: the ball cycles through colours and can only break segments that match its current colour. A puzzle inside a physics sim.
- Portal: teleport pads warp the ball across the arena.
Plus special overlays like Target (hit the highlighted segment) and Paint (colour the walls as you bounce).
Stunning Visual Effects
This isn't a grey-box physics demo. ViralBalls features:
- Rainbow gradient and pulsing wall colours
- Glowing balls with colour trails
- Confetti, shatter, and shockwave wall-break effects
- Reactive backgrounds that pulse with the simulation
- Custom ball images (upload any PNG/JPEG)
- Text overlays for captions and watermarks
Built-In Video Export
The killer feature for creators: record your simulation as an MP4 video directly from the browser. Choose from square (500×500), HD (1280×720), Full HD (1920×1080), or vertical TikTok format (1080×1920). No screen recorder, no post-processing: just click Record and download.
Save & Load Presets
Found the perfect combination of settings? Save it as a preset. Load it back any time with one click. Great for building a consistent content style.
Who Is It For?
- Content creators: produce viral TikTok / Reels / Shorts clips in minutes. Ball physics videos regularly hit millions of views.
- Teachers & students: visualise concepts like gravity, elasticity, kinetic energy, and momentum in an interactive, engaging way.
- Designers & artists: use the simulation as a generative art tool. The colour, trail, and glow systems produce genuinely beautiful visuals.
- Anyone who needs to relax: there's something deeply satisfying about watching a ball bounce. It's a free, browser-based stress reliever.
How to Get Started
- Go to viralballs.com
- Click Start Simulator
- Adjust settings in the right-hand panel (gravity, bounce, walls, colours)
- Choose a mode from the Modes Overview section
- Hit Record if you want to export a video
Everything runs client-side in your browser. Nothing is uploaded. Nothing is tracked. It's completely free with no sign-up required.
Why ViralBalls Over Other Simulators?
Most ball physics simulators online are either (a) bare-bones tech demos with no customisation, or (b) desktop software that requires installation. ViralBalls sits in a unique sweet spot:
- ✅ Browser-based: works on any device with a modern browser
- ✅ Full visual customisation: colours, effects, images, text
- ✅ Multiple game modes: not just one simulation
- ✅ Video export: MP4 recording built in
- ✅ Presets: save and reload your favourite settings
- ✅ Free: no paywall, no watermark, no account
Whether you're creating content, teaching physics, or just watching balls bounce for fun, ViralBalls is the most full-featured free option available.