Cataclysm: Bright Nights (BN) is distributed under the Creative Commons Attribution-ShareAlike 3.0 (CC BY-SA 3.0) license. All original copyrights and development rights belong to the Cataclysm Contributors.

The authors of the original game, Cataclysm: Dark Days Ahead, retain their copyrights. We, the Cataclysm: Bright Nights development team, do not claim authorship of the original game and acknowledge the contributions of all members of the Cataclysm community.

A list of all contributors to the game is available in the "Credits" document, which can be found in the main menu of the game.

Any code modifications made in this version of the game are available in an open repository, preserving the change history and crediting all original authors.