NewtonGameDynamics 1.5 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software is included in Photo & Graphics Tools.
The following versions: 2.3 and 1.5 are the most frequently downloaded ones by the program users. This free software is a product of Newton Game Dynamics. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software.
From the developer:
Newton Game Dynamics is an Open-source zlib-licensed integrated solution for real time simulation of physics environments.
You can integrate Newton Game Dynamics into your projects with ease.
The API provides scene management, collision detection, dynamic behavior and yet it is small, fast, stable and easy to use.
You may want to check out more software, such as Montagne, Wire Pilot Plugin or ImageVisu, which might be related to NewtonGameDynamics.