- Floppy Disc by Clker-Free-VectorV-Images from Pixabay
- Doom Logo from https://doomwiki.org/wiki/File:Doom_title_wide.png
- Skybox from https://opengameart.org/
- Brown, Gray, Yellow Cloud by Pieter Spiney Verhoeven
- Indigo Skybox by by Zachery "skiingpenguins" Slocum
- Corona and Redeclipse by Ulukai
- CRT screen effect by Lucas Bebber
- Font generated by: http://www.cufonfonts.com
- Some documentation has been copied from: https://doomwiki.org and dmspec16.txt
- Image by Freepik
