Amazon Publishing has expanded its Kindle Worlds platform to include G.I. Joe and Valiant Entertainment's Quantum and Woody and Eternal Warrior, opening the door for writers to publish stories based on those properties in the next few months.

Other new additions include Warner Bros. television series Veronica Mars and Ravenswood (a spinoff of Pretty Little Liars), Marcus Sakey's Abnorm Chronicles novels and Theresa Ragan’s Lizzy Gardner Files books.

“Since 1964, G.I. Joe has inspired the imagination of multiple generations by providing a backdrop of excitement and adventure," Hasbro's Michael Kelly said in a statement. "Whether exploring the secrets of the mummy’s tomb, or defending freedom from the evil plots of Cobra, G.I. Joe has been there. It is with equal excitement that Hasbro now enters a new segment of the business by embracing the concept of open-source storytelling, and officially unlocking the world of G.I. Joe to our fans through Amazon’s Kindle Worlds.”

Officially launched in June, Kindle Worlds is billed as the first commercial publishing platform for fan fiction. Amazon secured licenses from the likes of Warner Bros. Television's book-packaging division Alloy Entertainment, Valiant and an assortment of prose authors to allow fan fiction writers to create, publish and make money from stories inspired by works ranging from The Vampire Diaries and Gossip Girl to Archer & Armstrong and The Foreworld Saga.

Amazon Publishing pays royalties to both authors and rights holders: For works of at least 10,000 words, authors receive 35 percent of net revenue (based on sales price rather than the standard, but lower, wholesale), paid monthly. Licensors provide content guidelines for each “World,” which must be followed; in addition, Amazon doesn't allow pornography, offensive content (including racial slurs and excessive foul language), “poor customer experience” (including poorly formatted stories and misleading titles), excessive use of brand names, or crossovers.