Open gaming

The Fudge role-playing game system was created in 1992 by Steffan O'Sullivan with extensive help from the rec.games.design community. The name stood for "Freeform Universal Donated Game Engine" until Steffan O'Sullivan changed 'donated' to 'DIY' in 1995.

One reason why Fudge succeeded is that the author released it under the "FUDGE Legal Notice", a license that removed most restrictions on non-commercial use. However the FUDGE Legal Notice (more commonly known as simply "the Fudge license") was never intended to cover any work other than its eponymous role-playing game. Derivative works which were to be distributed for a fee required written permission from Fudge's author, Steffan O'Sullivan. The details of the Fudge Legal Notice were modified and expanded from time to time as O'Sullivan updated his work, but the essential elements of the license remained unchanged. The 1993 FUDGE Legal Notice allowed reprinting of the Fudge rules, including in otherwise commercial works, as long as certain conditions were met. The 1995 FUDGE Legal Notice permitted the creation of derivative works for personal use and for publication in periodicals.

In March 2004, Grey Ghost Games acquired the copyright of Fudge, and on April 6, 2005, they released a version of Fudge under the Open Game License, making it open for commercial use.

The phrase "opensource roleplaying" was used as early as 1999 by the Dominion Rules role-playing system, the license of which permitted supplementary material to be written for its rules. Another "open" system was the Circe role-playing system, published by the WorldForge project under the GNU Free Documentation License.

Despite Fudge and other games, the open gaming movement did not gain widespread recognition within the role-playing game industry until 2000, when Wizards of the Coast (WotC) published portions of the 3rd Edition of Dungeons & Dragons as the System Reference Document under the Open Game License. This move was driven by Ryan Dancey then Brand Manager for WotC, who drafted the Open Game License and first coined the term "open gaming" with respect to role-playing games.

The Open Gaming Foundation (OGF) was founded by Ryan Dancey as an independent forum for discussion of open gaming among the members of the fledgling open gaming movement. The OGF consisted of a web site and a series of mailing lists, including the OGF-L list (for general discussion of open gaming licensing issues) and the OGF-d20-L list (for discussion of d20-specific issues).

The most common criticism of the OGF was that it was primarily a venue for publicizing Wizards of the Coast. Ryan Dancey was an employee of WotC, and discussion on the mailing lists tended to focus on d20 and the OGL (both owned by WotC) rather than on open gaming in general.

The OGF maintained a definition of an "open game license" while it was active, with two criteria:

1. The license must allow game rules and materials that use game rules to be freely copied, modified and distributed.
2. The license must ensure that material distributed using the license cannot have those permissions restricted in the future.[2]

The Foundation explicitly stated that the first condition excludes licences that ban commercial use. The second requirement is intended to ensure that the rights granted by the licence are inalienable.[2]

The OGL gained immediate popularity with commercial role-playing game publishers. However, the OGL was criticized (primarily by independent role-playing game developers) for being insufficiently "open", and for being controlled by the market leader Wizards of the Coast. In response to this, and in an attempt to shift support away from the OGL and toward more open licenses, several alternatives to the OGL were suggested and drafted. Similarly, the popularity of the OGL inspired others to create their own, specific open content licenses. Virtually none of these gained acceptance beyond the works of the licenses' own authors, and many have since been abandoned.

Linda Codega, for Io9 in January 2023, reported on the details from a leaked full copy of an update to the OGL including updated terms such as no longer authorizing use of the OGL1.0.[3] Codega highlighted that "if the original license is in fact no longer viable, every single licensed publisher will be affected by the new agreement. [...] The main takeaway from the leaked OGL 1.1 draft document is that WotC is keeping power close at hand".[3] Following this, Paizo announced a new Open RPG Creative License (ORC) as a direct response to the reported changes to the OGL. Additional publishers, such as Kobold Press, Chaosium, Green Ronin, Legendary Games, and Rogue Genius Games, will be part of the ORC development process.[4][5] The ORC will be an open, perpetual, and irrevocable system-agnostic license[4][5] with legal development paid for by Paizo "under the legal guidance of Azora Law", however, the license "will not be owned by Paizo, nor will it be owned by any company who makes money publishing RPGs".[6] Paizo plans to find a "nonprofit with a history of open source values to own this license" and stated that "Azora Law's ownership of the process and stewardship should provide a safe harbor against any company being bought, sold, or changing management in the future and attempting to rescind rights or nullify sections of the license".[6][7]

The ORC was released in July 2023.[8][9]

Free League Publishing announced two licenses, for its Year Zero game system and another for its upcoming fantasy RPG Dragonbane.[10]