A crossover series puts characters from separate series into one story, or builds a shared universe across authors. The entries below are the largest examples in the index.
Series in Reading Order
- Percy Jackson and the Olympians by Rick Riordan — 25 books · 2005–2024
Crosses into the Kane Chronicles and Heroes of Olympus. - Star Trek: The Next Generation by Various — 95 books · 1987–2017
Shared-universe tie-in fiction across many authors. - Star Trek: The Original Series by Various — 92 books · 1981–2017
The longest-running tie-in line in the index. - DragonLance by Margaret Weis — 195 books · 1984–2024
Created with Tracy Hickman; a multi-author shared world. - The Heroes of Olympus by Rick Riordan — 10 books · 2010–2019
Combines the Greek and Roman camps from the earlier series. - Magic Tree House by Mary Pope Osborne — 36 books · 1992–2016
Long-running children's series with crossover arcs. - Perry Rhodan by Various — 10 books · 1969–1971
German science fiction series written by a rotating team. - Star Wars: The New Jedi Order by Various
Nineteen volumes by multiple authors, 1999-2003.
How to read these series
Numbered entries follow the order the books were published, which is the order the story was written and the safest order for a first read. Where a series has side novels or novellas, reading them in publication order avoids spoilers from later books.
Where the numbers come from
Book counts and publication years on this page are taken from the series entries in the GoBookSeries index. Each title links to the full book list for that series.
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