I am creating some software that, at the moment, uses parts of the same format of summarizing creatures as the published works of Wizards of the Coast. Specifically the 2nd edition of Advanced Dungeons & Dragons (AD&D 2nd edition).
From what I understand from the research I have done this does not fall under copyright, though despite the research I still have a hard time understanding it all. Where I get slightly more confused is trademarks and what some refer to as "product identity" however I haven't been able to find much information on the latter.
I don't understand how and what is protected outside the illustrations and perhaps the physical descriptions/explanations of the creatures. From my understanding of copyright and trademark the name and what I could refer to as the "recipe" (the list of attributes) of the creature can't be protected.
So what exactly is protected here and how, if at all, am I allowed to use parts of what is protected to stay kosher.