From publisher blurb:
Dark Albion: The Rose War is a 275 pages long, OSR RPG campaign setting, set in a fantasy medieval England during the War of the Roses (15th century). Think England + sorcery + demons and fairies + some fantasy twists to the world. 80% of the book is system neutral, so can be used with most role-playing games. Nonetheless, this book is designed with OSR games in mind, and will run best with Fantastic Heroes & Witchery (also available on RPGNow/Drivethru), and similar games such as Osric, Swords & Wizardry, etc., as well as the 5th edition of the most popular fantasy RPG! Note lastly that layout and art have been given great care to make the most visually pleasing book as possible: this means 10 maps, and two illustrations per pages on most of the 275 pages!