Algodoo

Go to scene ID: 268365 in algobox
Welcome to Collide Counter & Laser Counter
Write a URL into ID same description a contain into a scene ID.

There was contain a The_Henry_Race5600's Marbles
If make a collide counter (no spawn script), then undo/redo become same number if not scripted.
For a scene other same number variable is in the app.
For a coins, paid, how numbers, string, boolean, vector2, vector3, & etc.