Free · Count slow bounces in moon gravity

Moon Bounce Physics Lab for Kids

Boost a golden moon ball and count eight slow bounces while gentle gravity pulls it back down.

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

Friendly 3D physics

Moon bounce lab

Give the moon ball a gentle boost and count eight slow bounces in light gravity.

Bounces 0/8 Moves 0 Time 45s Opening lab
Moon gravity is gentle. Boost the ball and watch each soft landing become a bounce.Use left and right, A and D, touch, or the large controls. Space launches.

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.