HarperCollins Children’s Books has picked up worldwide English-language rights to The Elementia Chronicles trilogy—an unofficial Minecraft fan-generated adventure series from teen author Sean Fay Wolfe that’s been making the rounds in middle schools across the US.

Wolfe wrote at the first part of the trilogy at age 16 and then self-published it on Amazon.com in January, 2014. Quest for Justice follows new Minecraft players Stan, Kat and Charlie who quickly find themselves in danger as they are targeted by more experienced players. With dark forces at work on the Elementia server, the newbies must band together against the king and battle the natural forces of the game in order to unravel the mysteries of Elementia in the name of justice.

Targeting kids age eight to 12, HarperCollins will publish Quest for Justice on July 28 in the US. The second title is set for release on October 27 and the third on January 26, 2016.