Picking up where the Super Dungeon Series left off, The Royal Secret takes readers into the heart of Crystalia as Otto tries to protect his father's legacy and uncover an evil plot. This action-packed middle grade novel includes beloved characters from the board game Super Dungeon Explore. Praise for Christopher Keene:
"Fans of LitRPG and video games need to be reading Christopher Keene." —Paul Mannering, President of SpecFicNZ, author of Engines of Empathy

Praise for the Super Dungeon Series:
"A fast-paced adventure set in a fascinating world. Thumbs up!" —Matthew P. Schmidt, author of The City and the Dungeon
"Chock-full of adventure and magic, and heroes fighting against great odds!" —Andrew Seiple, author of Threadbare
"Great heroes, great villain, and a great story. If you haven't read The Midnight Queen, you're really missing out.” —Zachariah Dracoulis, author of Galactic Badlands