From all agnostic solo engines, this is my fav. I liked the Yes/No/And/But oracle better than others, and NPC / Non living important assets are tracked with easy tags. The book also has some flow charts for beginners.

There isn't many Oracles, due it been both system and theme agnostic, but the ones given are enough to kickstart, and even better to insta create a random world and scenario for a solo one shoot in a rainy day.

Also, this is not rules heavy, and easy customizable. I'm even mixing and matching it with other systems for my Mork Borg and V5 games, and may soon use it for 7 Sea solo.

First of all, I'd like to clarify that this is a very good and concise rule set. So, my points bellow are mainly my personal taste.

I'd love to see a bit more of constructed play than journal style, mainly for people with zero exp in soloing RPGs. Personal Oracle is a wonderfull ideia, pure gold. But, like in any solo play, one can find itself lost after a couple of scenes. This is a barrier for anyone trying any solo system, and with Vampire-style narrative this is crit than ever.

I'm not so found of the reverse reveal. I'm saying this cuz, even being easy to work around, I liked the Scales concept, but they work much better with the reverse system.

Besides this two points, the book presents usefull Oracles (the more, the better), an example both in rules and narrative. Like I said, it's a very good rule set, and easy to patch prefered choices and hacks for a more exp soloist.

And if you are new to solo RPG, give it a try. Sounds crazy at first, but you can find out a style you're comfortable with, and this books for sure helps this task.