The order of all the series of books by rick riordan wrote

The Trials of Apollo is the third Camp Half-Blood series.

Now, you should read The Trials of Apollo and Magnus Chase and the Gods of Asgard together, in chronological order, as they take place at the same time and may have spoilers if not read together.

Now you should read the crossovers, as they only make sense if you've read both The Kane Chronicles and Percy Jackson and the Olympians/The Heroes of Olympus. The series makes several references to Percy Jackson and the Olympians, though, so read that first. These are sort-of in the same universe ( see the other question) but they are with entirely different characters. That's the obvious part, as those are all with the same cast of characters. This is the sequel series to Percy Jackson and the Olympians, and is a continuation of the stories.ДЄfter that would be a good time to read this, a collection of short stories, which have stories from The Heroes of Olympus. Now you should read this short story collection, as most of the stories take place during/after Percy Jackson and the Olympians. This is the original series therefore, it should be read first. When there are 3-5 books just listed in order, that's the order that the series goes in. This is mostly in chronological order, but it's ordered more in how they came out and how they will make the most sense. I will present two orders here, chronological order and the order in which they should be read first. There might be a few minor spoilers not marked, but I tried to mark them all. I tried to put them in spoiler quotes, so don't click those if you haven't read them yet.

Warning: There may be some slight spoilers included here. The Trials of Apollo has Greek and Roman gods.

Magnus Chase and the Gods of Asgard deals with the Norse gods. The Kane Chronicles deals with the Egyptian gods. The Heroes of Olympus deals with the Greek and Roman gods. A reminder: Percy Jackson and the Olympians deals with the Greek gods.

The order of all the series of books by rick riordan wrote