Hi! There are no tools IN THE GAME to allow it to be played solo HOWEVER, I think with the help of an external oracle system of some kind, it would not be impossible. Especially an oracle system with a focus on character motivations and non-combat actions!
I am currently using it to run a stock system on the side of my Pathfinder game! But even when my players don't invest in it, I am able to run all my competing factions pretty easily. That being said, I'm pretty good at and find it interesting to keep track of like 15 different leaders' goals -- which may or may not be interesting to you.
I wish you luck!