The majority of the files here are under the [GNU GPL
version 2](COPYING.GPL2.md). The exceptions are the following:

* PWAD files found under the [pwads/](pwads/) subdirectory are the copyright
  of their individual authors; see the text files included in each .zip for
  details.
* Demo files found under the [demos/](demos/) subdirectory are the copyright
  of their individual authors. See the [Compet-N archive](https://archive.org/details/competn)
  to find the original details for individual files.