Tightrope Walker
A daring flea wobbles across the high wire, jolted by every keystroke.
FleaWinder™
A tiny animated circus that lives on every screen
Your typing, mouse movement, and clicks power a miniature circus on your desktop, phone, TV, and watch. Create your own flea, discover your circus calling, and unlock a tech tree of 84 upgrades as your flea evolves from beginner to legend.
Free for Windows, macOS, iOS, Apple TV & Apple WatchThe optional paid license removes the reminder popup and supports an independent creator.
Seven Live Acts — Plus Your Own
Trapeze Artist
Pendulum physics power death-defying leaps between swinging bars.
Cannon Show
Every mouse click loads and fires the cannon. BANG!
Strongflea
Each keystroke pumps the barbell higher. How high can you go?
Unicycle Rider
Speed and lean respond to your mouse energy in real time.
Juggling Flea
Three balls arc through the air in a mesmerizing cascade powered by your activity.
Fire Breather
A stream of flame erupts with every click—the more energy, the longer the blast.
Unlock the Full Show
Get access to all acts, features, and premium flea performers. Remove the reminder popup, support an independent creator, and enjoy the complete circus experience across all your devices.
One-time purchase. Not a subscription.
How It Works
Wind the circus like a music box. Your typing, clicking, and mouse movement store energy in a tiny flywheel that powers every act on stage.
More activity winds the circus tighter — gears spin faster, confetti flies, and the crowd roars. Step away and the flywheel slowly unwinds to a gentle idle.
Zero configuration. No accounts. All input stays 100% local—nothing is ever recorded or transmitted. Just run it and enjoy.
A Rich History
Flea circuses have captivated audiences for over 400 years—from 16th-century goldsmiths who harnessed live fleas to demonstrate impossibly tiny metalwork, to Victorian showmen who packed London’s Regent Street with miniature chariot races and cannon shows. FleaWinder™ carries on that tradition, digitally.