By my definition an RPG –role playing guide– is a guide to playing a role in an imaginary world. It is not a game, nor is story involved even though an RPG involves fiction. In an RPG an adventure is more like life even though it is make believe. An RPG is more a simulation or model of life for all that it is a matter of fiction or the imaginary.
That is how I see things and how I’m going to handle matters. Now on to the matter of the system or engine used in RPGs