Save your dice for your next D and D game. This game will not use dice and instead relies on good storytelling, clever actions, stat superiority and the whims of the gamemaster.

If you want the rulebook, I believe Phage Press is out of business, but gamebooks are no doubt available on your favorite secondary market platform. Sadly, the creator of the game, Erick Wujick, passed away some years ago. If you want the books, Amber Diceless Roleplaying by Wujick with art by Mike Kucharski is the book you would need. If you want to buy ShadowKnight, the second book, it is by Wujick, with art by Kucharski and Ken Alves. Most of the powers in that book will not be available to player characters, so no need to splurge on both books unless you want to.