"399 Games, Puzzles and Trivia Challenges Specially Designed to Keep Your Brain Young" by Nancy Linde is a comprehensive collection of games and activities designed to engage and stimulate the brain. With a variety of word puzzles, logic challenges, and trivia questions, this book provides hours of entertainment and cognitive exercise. Published by Workman Publishing Company in 2012, the trade paperback format makes it convenient to read and solve problems on the go. The illustrator's contributions bring the puzzles to life, making this self-help book a valuable resource for those looking to keep their minds sharp and active.