The Sonus Game Development Software is completely free to use and
anything produced using it belongs to the developer to do with as they
wish.
Click to download button and install the software then proceed to the
tutorials page using the tutorials button to begin learning how to use
it.
The GDE will export stand alone games. However they will require opanal to run. Which is downloadable at
https://www.openal.org/downloads/
.The GDE will attempt to run the openal install package on installation, but may require administrative permissions, and may not be screen reader friendly. This issue is unfortunately with openal and out of my control.