Editing User:Big Mac (section)

=== Agreements on Publishing Content Compatible with Commercial Roleplaying Games ===
Wizards of the Coast (owned by Hasbro) attempting to revoke their non-revokable Open Game Licence 1.0a, so that they could create a new version of the licence that would allow them to skim royalties off of the top of any Kickstarter campaigns that hit a $1 million dollars funding target.

This was an example of "changing the deal after it is made" on a free licence that encouraged other companies and one-man-band self-publishers to create content that was compatible with Dungeons & Dragons 3.0, D&D 3.5 and D&D 5.0. After a lot of pushback from consumers, WotC dropped their legal threats to block people from using OGL 1.0a, but then went on to release the new version of their System Reference Document under the Creative Commons Licence. (Creative Commons is a more open licence than the Open Game Licence was, but there are publishers that have gone out of business and designers who have since died who released "Open Game Content" under OGL 1.0a and the break in the chain of continuity has made it legally impossible to mix and match the content shared under the two different licences.)

In between 3rd Edition D&D and 5th Edition D&D, Wizards of the Coast also used another licence, called the Game System Licence to control the distrubution of content that was compatible with 4th Edition D&D. (This means there are three different pools of sharable content that are shared in three different safe harbour agreements and that which can not be mixed and matched.)