Algodoo

Just a friendly tip.
I've noticed you've shared pretty much the same scene with minor changes over 10 times now, and I want to tell you about a feature called "Save and Re-Share".

If you go into the save menu on a scene that was already shared, even if you modified it, you can press "Save and Re-Share" instead of uploading the scene again on a new file.

What this button does is modify the scene on both your hard drive and the Algobox, updating the scene without creating more.

I hope this helps!