If I were to design an RPG that had Str/Dex/Con/etc… would it be legal to publish it? I know that games like Pathfinder and Dungeon World got away with it, but I’m not sure how or why.
Looking at D&D 5e’s recent OGL, I have found that the following items are considered Intellectual Property and are not Open content:
Dungeons & Dragons, D&D, Player’s Handbook, Dungeon Master, Monster Manual, d20 System, Wizards of the Coast, d20 (when used as a trademark), Forgotten Realms, Faerûn, proper names (including those used in the names of spells or items), places, Underdark, Red Wizard of Thay, the City of Union, Heroic Domains of Ysgard, EverChanging Chaos of Limbo, Windswept Depths of Pandemonium, Infinite Layers of the Abyss, Tarterian Depths of Carceri, Gray Waste of Hades, Bleak Eternity of Gehenna, Nine Hells of Baator, Infernal Battlefield of Acheron, Clockwork Nirvana of Mechanus, Peaceable Kingdoms of Arcadia, Seven Mounting Heavens of Celestia, Twin Paradises of Bytopia, Blessed Fields of Elysium, Wilderness of the Beastlands, Olympian Glades of Arborea, Concordant Domain of the Outlands, Sigil, Lady of Pain, Book of Exalted Deeds, Book of Vile Darkness, beholder, gauth, carrion crawler, tanar’ri, baatezu, displacer beast, githyanki, githzerai, mind flayer, illithid, umber hulk, yuan-ti.
All of the rest of the SRD5 is Open Game Content as described in Section 1(d) of the License.
Since it doesn’t list mention any of its ability scores, it seems that it’s fine. Except that I’m not sure if these ability scores count as a component of the d20 system (which, again, is not Open Content).
So can I do this? Why or why not?