Asked in Copyright and Intellectual Property

Q: Is the ruleset for Dungeons and Dragons 5th edition patented?

With Hasbro updating the Open Game License, this means that community projects becoming commercial products like Pathfinder and Critical Role have to adapt.

I would like to create an open source alternative to Dungeons and Dragons 5th Edition but I want to know if I am allowed to adapt the rules in this tabletop game.

1 Lawyer Answer
Stephen E. Zweig
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  • Intellectual Property Lawyer
  • Los Gatos, CA

A: For printed material like this, patents don't apply, but copyrights do. This is most likely under copyright. This means that can't borrow the text or illustrations from the original. However you can try to make up your own game under a different name and different rules.

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