I've always kinda wondered this myself. The copyright office seems very clear about not being able to claim ownership of the mechanics of a game. I always assum

I've always kinda wondered this myself. The copyright office seems very clear about not being able to claim ownership of the mechanics of a game. I always assumed the additional grants in the OGL were for content like (for example) monster, deity, and item descriptions, and maybe to the language used in the instructional material, not just the raw mechanics.