Patent and trademark rights are not licensed under this Public License.
Dungeon Master is a trademark not just copyrighted. But if you’ve checked, you should be good.
I just know Hasbro has a history of cracking down. It’s why many use Game Master instead. I’m surprised OpenAI let it through…
It’s in the same genre/industry too, which is why I would be concerned…
fantasy role-playing games and board games, and game accessories; namely, booklets containing role-playing game scenarios, and computer game programs