Algodoo

Everything here on Algobox is FREE! No need to say that.

there is no rule about selling maps.........

but seriously i just mean't if it wasn't free you would have to just ask

i just don't want some dude claiming this is his map

I understand what you are saying. This issue of copying other people's scenes has been a real headache for me ever since I took on the responsibility of Algobox admin back in 2014. Because of the fact that scenes and parts of scenes get copied and republished nearly every day, it's almost impossible for me to determine who is the original author of a scene or parts of a scene. A few years ago, a user sent me a report that someone copied the wheels from his car and used them in their own scene. After I warned the guy for copying someone else's work without permission, I later found out that the person who complained, copied the wheels from someone else's scene! After that experience I decided I will no longer waste my time trying to track down who was the original author of scenes or scene components. I have better things to do with my time! Also, most people who use Algobox are under the incorrect assumption that if you simply write "Credit to username" then it's Okay to copy and publish their work. WRONG! I tell people if you want to copy and then publish another person's work, you must first ASK THEM PERMISSION to do so. Only then if they give you permission to use their work, you can then write "Credit goes to (username) for the wheels" or whatever was copied.

Here's anther thing that many people don't know because they didn't read the Algobox TOS (Terms of service). Everything that users upload to Algobox becomes the property of Algoryx (the company that created Algodoo and the Algobox website). So, nothing that you post actually belongs to you. Everyone who registers an account on Algobox must agree to the TOS if they want to use the website.

Here's a scene I made that you might find interesting. It explains the difference between giving credit and asking permission:

Giving Credit