Every DM should at least have a PDF of this book. 6/5 stars. This is in my top 5 most useful D&D books.

If you really love the Witcher you are going to love this game. This whole game system does a great job translating not only the fantasy of the games but really loyally to the books as well. The art is INCREDIBLE and the organization of information is clean and easy to read. The professions systems works great and is refreshing if you are burnt out on traditional class archetypes. I love the magic system in this game and if I was ever going to build a magic system I would have this by my side. That and the gear and crafting. I haven't played a game with a combat and gear system I like better.

The OG print version of this has a LOT of errata, but R Talsorian customer service is impeccable and provides updated PDFs. And if this looks overwhelming they have a Basic Rules book that you can get almost for free.

Highly recommend. Must have for TTRPG players who love the books, games, and even the show. If you don't care about the witcher but want something gritty, brutal, realistic, and challenging with crunch and gear/magic/crafting systems that make your actions matter. Then this is ALSO a must have. I've never had a bad time playing this and it helped get my brother into the Witcher.