Bad Moon Rising is an add-on for Battle for Wesnoth (BfW), providing a trilogy of single-player (offline) campaigns. For instructions on how to use, see the BfW documentation at:
For an ongoing, somewhat disorganized discussion of this add-on, see:
https://forums.wesnoth.org/viewtopic.php?f=8&t=31348
The add-on's source code, artwork, and sound assets are provided under the terms of the GNU General Public License version 2, or (at your option) any later version, under the same terms as the main BfW project.
Note: The artwork will most likely be released under CC-BY-SA, but I will wait for the main BfW project to make the change first.
This add-on is best installed through the BfW add-on interface. Please see the BfW help for more information.