Nayden Kostov has 2 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is 523 Hard to Believe Facts.

"A fascinating list of facts perfect for anybody who just wants to know stuff! A finalist and highly recommended." (The Wishing Shelf Book Awards 2017) My aim was to create a compilation of facts suitable for children. This book will entice them into listening and learning new stuff while having fun. I created the popular trivia website RaiseYourBrain and wrote five trivia books so far. As I was new to writing for kids, my son Pavel (then aged eight) helped me very much. He reads a lot and really loves learning new things every day. Pavel proudly illustrated the book and helped me to handpick and order the facts. The book contains over 600 pieces of trivia and is covering topics that kids love: Cute animals and human body. The lack of explicit sexuality, foul language, or gore makes it a good listen for anyone in the age range eight - 18 years (and their parents too). A life hack if your child is not an avid listener: When you are preparing his/her lunch box, slip inside a couple of those facts. You could print out three facts every day to create some lunchtime fun for your kids and provoke their intellectual curiosity.
©2017 Nayden Kostov (P)2020 Nayden Kostov

Which was the first country to give the citizenship to a robot? Is the dark side of the Moon always dark? What is the sismo detector? Discover the answers to these seemingly random questions and more! The interesting trivia in this pause-resisting fact audiobook were collected by Nayden Kostov, founder of the RaiseYourBrain website and author of popular fact books such as 1123 Hard to Believe Facts, and 853 Hard to Believe Facts. As the third installment of this series, 523 Hard to Believe Facts has more detail for each fact, as requested by previous fans! These facts are a result of years of sifting through history and reference books, as well as searching the Internet and researching the news. Each fact is suitable for nearly any age. The “spiciest” entries are separated and listed in their own chapter, but still use clean language! Become a trivia whiz with even more facts in the Hard to Believe Facts series!
©2019 Nayden Kostov (P)2020 Nayden Kostov