Amazon.com on Friday announced that "The Hunger Games" trilogy has replaced the "Harry Potter" saga as the online retail giant's best-selling series of books.

"Since debuting in 2008, Katniss Everdeen and the Hunger Games have taken the world by storm, much as Harry Potter did a decade before," said Amazon.com books and Kindle editorial director Sara Nelson.

The trilogy by Suzanne Collins about children forced to fight for their lives in a Roman circus-style televised blood sport in a dystopian world has outsold "Potter" even though J.K. Rowling wrote seven books about a boy wizard.

"To achieve this result in just four years is a great testament to both the popularity of the work and, we think, the growth in reading digitally during that time," Nelson said.

"Hunger Games" titles have consistently made it into Amazon.com's Top 10 lists in print and in digital format for the Seattle-based firm's Kindle electronic readers.