Derivative works which were to be distributed for a fee required written permission from Fudge's author, Steffan O'Sullivan.
The 1995 FUDGE Legal Notice permitted the creation of derivative works for personal use and for publication in periodicals.
The OGF maintained a definition of an "open game license" while it was active, with two criteria: The Foundation explicitly stated that the first condition excludes licences that ban commercial use.
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.
Similarly, the popularity of the OGL inspired others to create their own, specific open content licenses.
[...] The main takeaway from the leaked OGL 1.1 draft document is that WotC is keeping power close at hand".
[4] Following this, Paizo announced a new Open RPG Creative License (ORC) as a direct response to the reported changes to the OGL.
[7] 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".
[9][10] Free League Publishing announced two licenses, for its Year Zero game system and another for its upcoming fantasy RPG Dragonbane.