Start with The Crown Conspiracy. It is the first of the six Riyria Revelations, and it is short, fast and small on purpose — two men are hired to steal a sword and are framed for a king's murder, and that is the whole plot. Do not read that modest scale as a promise about the rest.
The obvious alternative is to begin with the prequels, and it is a genuine mistake rather than a matter of taste. The Crown Tower opens the later Riyria Chronicles with the question of how Royce Melborn and Hadrian Blackwater could possibly work together — and that question is only interesting if you already know the answer. Read the story as published, then the origin.
Sort the editions out before you buy anything
The six novels are usually sold as three omnibus volumes, and the omnibus titles do not match the novel titles. It is easy to buy the same story twice. Ask what a volume actually contains rather than trusting the cover.
The two that read like capers
The Crown Conspiracy and Avempartha are the fastest reading in the whole series, three or four sittings each. The series is a two-hander — a thief with no illusions and a swordsman with too many — and it works or fails entirely on whether their dialogue lands for you. You will know by page fifty.
Sullivan wrote all six books before publishing the first, and it shows. Details that look like throwaway colour here turn out to be load-bearing, so the series rewards attention early rather than momentum. The world is deliberately traditional fantasy furniture: a fallen empire, a church that wants it back, an heir prophecy. Sullivan is not subverting the genre, he is executing it cleanly, and expecting subversion is the commonest way readers misjudge the books. Avempartha widens the frame and introduces the church politics that eventually take over; it is the book that tells you whether you want the other four.
The series gets bigger
Nyphron rising moves from local jobs to imperial politics while keeping the same wry, close-third voice, and that tonal consistency is the series' most distinctive choice. It is also where the prophecy-and-heir material stops being background and becomes the plot.
The emerald storm moves the story onto a ship and away from familiar ground. It feels the most self-contained of the six and its relevance is the least obvious on a first read. Modina's parallel storyline becomes the emotional centre of gravity from here on; readers who skim her chapters to get back to Royce and Hadrian miss the reason the ending works.
The ending
Wintertide is the convergence book — nearly every thread and character introduced since the first novel arrives in the same city, and the pleasure depends entirely on having read them in order. Percepliquis is the longest at roughly five hundred pages and is best read in a concentrated stretch. It pays off material planted in the very first chapters, closes the backstory of both men, and resolves the prophecy in a way that will make you want to reread an earlier scene immediately.
Sullivan plays the ending straight. No last-minute deconstruction, no change of register. Stopping here is a complete experience, and plenty of readers do.
Afterwards: the Riyria Chronicles
The Crown Tower is the first meeting and is deliberately unpleasant — Royce and Hadrian dislike each other, and the book's job is to make a partnership you already enjoy look improbable. The rose and the thorn fills in the Medford backstory the Revelations referenced without explaining, including material about Royce that reframes his behaviour in the main series. The Death of Dulgath (The Riyria Chronicles Book 3) is the most self-contained of the three and the closest the series comes to a straight mystery.
These are standalone jobs rather than a serial arc, so they can be spaced out. Sullivan has continued the Chronicles past these three; stopping after the third leaves you at a natural point, having watched the partnership form, harden and settle. Chronology and reading order diverge here deliberately, and that divergence is the recommendation: read the experience as published, not the timeline. More fantasy paths are on Discover.
Follow the full ordered path here: The Riyria Revelations Reading Order: Where to Start.