I have been designing a Role-Playing Game engine that allows the game to be played via table-top, card-game, board-game, or even converted to a MUD/Video game seamlessly.
I have been working on this project for 12 years...
The core of the game will be in 3 books(like Dungeons & Dragons). What parts of this can I patent, if anything?
I know that if something ever come of it, companies will start copying my system and equations for combat.
In 2007 I showed a unfinished version of the game design to an "idea" company. They seemed very enthusiastic about it, offered to hire staff to finish for me, and was only gonna give me 7% in royalties. I backed out because I wanted to finish the design myself(i'm picking about my design). After that they harassed me for about year about partnering with them. For only 7% royalties, that was kind of a turn-off.
FYI, I know nothing about the patent system or it's process.