I summon and bind the power of Wikipedia!
What’s a role-playing game?
Wikipedia, speak again! (Note: Delta Green is usually played as a tabletop RPG.)
The original sourcebook, Delta Green, remains the most essential resource for running a Delta Green game. Delta Green: Countdown, Delta Green: Eyes Only, and Delta Green: Targets of Opportunity widely expand and enhance the setting. Of course, you will also need a set of game rules. Delta Green products are written for Chaosium’s Call of Cthulhu, and understanding that game’s rules and settings will enhance your use and understanding of Delta Green.
While Delta Green was written for the Call of Cthulhu setting and rules, many players have incorporated its blend of cosmic horror and deadly conspiracy into other games entirely, including Trail of Cthulhu, Call of Cthulhu D20, Nemesis, Savage Worlds, Vampire: The Masquerade, Mage: The Ascension, Dark*Matter, Conspiracy X, GURPS: Illuminati, GURPS: Black Ops, Over the Edge, Cyberpunk, and many others. The authors of Delta Green encourage experimentation. If you’ve found a new use for Delta Green, let us know!
In Delta Green, nothing is canon. Consider the novels, short stories, and online articles the way you would consider logs or journals of other players’ games, as examples of stories or games which other players have experienced. All players are encouraged to use what materials are appropriate and most effective for their games, whatever the source. Use what works; do what you will with the rest.
Different writers have different styles, attitudes, and ways of presenting Lovecraftian horror. In addition to Lovecraft himself, Delta Green tends to associate itself most closely with Ramsey Campbell and Robert Chambers, and least closely, in many ways, with August Derleth and Brian Lumley.
Can I publish Delta Green material on my own website?
We encourage Delta Green fans to make material available online for the edification and enlightement of others. You are free to publish such material as long as there’s no cost for anyone else to use it.
In order to protect Delta Green operational security and the intellectual property rights of our publishing venture, we require that the following notice be appended to each web page that makes use of Delta Green characters and settings:
Published by arrangement with the Delta Green Partnership. The intellectual property known as Delta Green is ™ and © the Delta Green Partnership, who has licensed its use here. The contents of this document are ©<fill in author’s name>, excepting those elements that are components of the Delta Green intellectual property.
If you have any questions about whether or not you need to apply this notice to a particular page, please contact Shane Ivey, firstname.lastname@example.org.
This license applies only to free, noncommercial works. Any paid or commercial product that uses Delta Green or Delta Green-associated property must be separately and specifically licensed from the Delta Green Partnership.