31 books in series

Camp Half-Blood Chronicles

Camp Half-Blood Chronicles is a 38-book series with 31 released primary works first released in 1962 with contributions by Rick Riordan, Nick Chamian, Mark Oshiro, Chris Dickey, Mary-Jane Knight, Leah Wilson, Attila Futaki, and Tamas Gaspar.

The Lightning Thief
The Sea of Monsters
The Titan's Curse
The Battle of the Labyrinth
The Demigod Files
The Last Olympian
Percy Jackson and the Singer of Apollo
The Son of Sobek
The Staff of Serapis
The Crown of Ptolemy
The Son of Neptune
The Demigod Diaries
The Mark of Athena
The House of Hades
The Blood Of Olympus
The Chalice of the Gods
The Hidden Oracle
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Untitled

The Burning Maze
Campo Mezzosangue - Il libro segreto
The Tyrant's Tomb
The Sun and the Star
O Sol e a Estrela
The Court of the Dead
The Sea of Monsters: The Graphic Novel
Percy Jackson and the Lightning Thief - The Graphic Novel
Percy Jackson & the Olympians: The Ultimate Guide
Percy Jackson's Greek Gods
Percy Jackson's Greek Heroes
The Titan's Curse: The Graphic Novel
Percy Jackson and the Greek Gods
Rick Riordan's Demigods of Olympus: An Interactive Adventure
Percy Jackson and the Olympians The Lightning Thief The Graphic Novel
Demigods and Monsters: Your Favorite Authors on Rick Riordan's Percy Jackson and the Olympians Series
Percy Jackson en de Griekse goden
Os Heróis Gregos de Percy Jackson
The Son of Neptune: The Graphic Novel
The Battle of the Labyrinth: The Graphic Novel
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Demigods of Olympus