Yep, that's what I've been doing, too! On the last round, I used to that to introduce a seperate entity, simply called the mysterious entity. Had the MC game end himself, the entity appeared, offered to bring him back - but she first had to realize that some serious change had to be made.
Had a happy ending, at least, despite the very much grim beginning.
There is so much you can do with this, it's insane.