The PopularMMOs 4 BOOK LOT includes hardback copies of the following titles: "Zombies' Day Off", "Enter the Mine", "Into the Overworld", and "The End of All Things". Published by HarperCollins, these books are part of the Popularmmos Series and are intended for a young adult and adult audience. With a narrative that combines elements of fiction and fantasy, these illustrated novels explore themes of zombies, friendship, and action & adventure. Written by the popular creator of the YouTube channel, PopularMMOs Pat and Jen, these books offer readers a thrilling and immersive experience in a 2020s era setting.