*"[[For Magnus Chase: Hotel Valhalla Guide to the Norse Worlds]]"
=== Tidak diterbitkan ===
==== ''The Heroes of Olympus'' ====
* ''The Lost Hero'' – 12 Oktober 2010<ref name="KaneAnnouncement">{{cite web|url=http://www.amazon.com/Camp-Half-Blood-Book-Rick-Riordan/dp/142311339X/ref=pd_sim_b_1 |title=The Heroes of Olympus, Book One: The Lost Hero (9781423113393): Rick Riordan: Books |publisher=Amazon.com |date=2009-09-09 |accessdate=2010-05-31}}</ref> (seri sekuel dari ''[[Percy Jackson and the Olympians]]'')
