I prepped and ran this just the other night. The group had a great time.

I would say that, as simple as the game actually is, I had to do more prep than I should have had to because the actual editing isn't very strong. References to rules are made in a sort of scattershot at times and things like the lists of Rooms and Obstacles aren't cross-referenced with the page-numbers containing their descriptions. Another idea would be to make a kind of flow-chart for the various results a Survival Test can have instead of bullet lists that don't 'flow'.

The black jack resolution mechanic is a little weird at first but it's such a universally known game that the group really latched on to it quickly.

Another review referenced the art being a bit cartoony and I'd agree, though that's not really a big problem.

These are absolutely fantastic--and PERFECT for new players of when you're playing class you're unfamiliar with.

This is an absolute waste of money and I'm frustrated at myself for ordering the physical copy when I should have just gotten the PDF. The book is rambling and ridiculous--Over half of the book is restating something already said earlier in the text or saying something that never needed to be said. Large swaths of the back half of the book generically describe things that you'd be better suited for finding in the rule books for the game you're actually playing--ALONG with the exact same advice regarding difficulty/variety. Almost everything in this book should/will be addressed by readying the Game Masters guide of whatever game you're playing. The DMG for D&D 5e, for instance, does a TREMENDOUSLY better idea of providing guidance for developing a campaign and adventures. This book might have been helpful in years past but it is so shallow that one could get all of this advice, and then some, in a more better writing voice for free on blogs.

This is a great 'Stuff every DM is gonna ask' document. I summarizes a LOT of advice I've found in little pieces on different blogs/videos, etc and says it all in a quick, conversational tone that's enjoyable to read.

Just buy it. It's useful.