6 books in series

Magnus Chase and the Gods of Asgard

Magnus Chase and the Gods of Asgard is a 6-book series with 6 released primary works first released in 2015 with contributions by Rick Riordan.

The Sword of Summer
The Hammer of Thor
The Ship of the Dead
9 From the Nine Worlds
Hotel Valhalla Guide to the Norse Worlds
Hotel Valhala: Guia dos mundos nórdicos