This is a project to create open source files for the dxx-rebirth project: https://github.com/dxx-rebirth/dxx-rebirth
The programs have their own licenses.
The data files in the new_hog and base_files directory may be distributed under the GNU General Public Licence, version 2 or later, or the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.