Brandon Sanderson, the bestselling author known for his epic fantasy novels, has already raised more than $16 million on crowdfunding platform BackerKit since launching it earlier this week.

The campaign is to fund a leatherbound edition of Words of Radiance, the second book in Sanderson's fantasy series, The Stormlight Archive. The leatherbound edition will feature premium materials and illustrations, as well as a new "secret project," Sanderson has teased. Add-ons include an audiobook, which Sanderson says will also be available on Audible, suggesting he has come to an agreement with the audiobook giant . (Sanderson had been in negotiation with the company for better terms for authors).

Sanderson's BackerKit campaign, which has 55,000 backers and runs through March 30, is the most successful fundraising effort on the platform thus far. This follows Sanderson's previous record-breaking Kickstarter campaign in March 2022, which raised $41.7 million from 185,341 backers, setting a new record for the most funded Kickstarter in the platform's history. That campaign supported the release of four books.