This project seems to be completely abandonded. The only version appeared is 0.0.1alpha, and no compiled binaries are available for download on official site.
Project links:http://sourceforge.net/projects/openduke/http://openduke.sourceforge.net/index.php?section=downloads
If somebody has any binaries related to this project or is able to compile the project, please be so kind to contact me.
All screenshots have been taken from the official site.