Riordan’s bibliography extends across distinct series that fit into a shared fictional world, often called the Riordanverse. While the Greek and Roman storylines link directly through character crossovers, his Egyptian and Norse series run parallel, occasionally intersecting through graphic novels and short fiction.
| Series Title | Publication Span | Mythological Pantheon | Narrative Role & Scope |
|---|---|---|---|
| Percy Jackson & the Olympians | 2005, 2009; 2023, Present | Greek | Core sequence following Percy's adolescence and the Second Titan War. |
| The Kane Chronicles | 2010, 2012 | Egyptian | Sibling-led trilogy introducing the House of Life and Egyptian deity hosts. |
| The Heroes of Olympus | 2010, 2014 | Greco-Roman | Nine-protagonist epic detailing the union of Camp Half-Blood and Camp Jupiter. |
| Magnus Chase and the Gods of Asgard | 2015, 2017 | Norse | Boston-based trilogy following Annabeth’s cousin through the Nine Worlds. |
| The Trials of Apollo | 2016, 2020 | Greco-Roman | Five-part redemption arc tracking Apollo cast down as mortal Lester Papadopoulos. |
The sustained commercial output over two decades demonstrates deliberate pacing. Riordan concluded major story arcs before starting others, preventing the narrative deadlocks that often derail lengthy fantasy sagas.
