Free · Roll parcels over linked planks

Wiggly Bridge Physics Test for Kids

Send five round parcels across a wiggly bridge and watch each linked plank pull on the next.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup

Friendly 3D physics

Wiggly bridge test

Send five round parcels across a bridge made from linked moving planks.

Parcels 0/5 Moves 0 Time 55s Opening lab
The bridge pieces pull on one another. Release parcels slowly and watch it bend.Tap the view or use the large action button. Space also works.

Runs only in this tab with cannon-es. No login, leaderboard, chat, ads, uploads, or saved player profile.

Powered by cannon-es, an open-source library available under MIT.

Three simple steps

How to use it

  1. Choose an easy, medium, or quick speed and press the large start button.
  2. Use the large controls, keyboard, or touch to aim and start each physics move.
  3. Pause or reset anytime. The 3D physics stays private in this browser tab.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.