Bobiverse book 6 "The Infinite Extent" arrives on Audible September 10

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The latest installment of the popular Bobiverse audiobook franchise is coming to Audible September 10, IGN can exclusively reveal. Audible will be celebrating the Dennis E. Taylor series’ 10th anniversary with the release of The Infinite Extent, which will also see the return of Ray Porter (Project Hail Mary) as the book’s narrator.

As part of the reveal IGN can also exclusively share the very first look at The Infinite Extent’s cover art, which you can see above.

The Bobiverse series follows protagonist Bob Johansson, who “wakes up 117 years after his death to discover his consciousness has been uploaded into a sentient space probe and launched into the great unknown. As he explores the farthest reaches of the galaxy, Original Bob becomes a legion of Bobs, encountering strange alien races, battling existential threats, and grappling with questions of AI consciousness, identity, and what it means to be post-human.”

Taylor says fans of the Bobiverse are in for more intergalactic thrills.

"The Infinite Extent tackles the biggest questions yet,” Taylor says. “Faster-than-light travel, who built the wormhole network, and stopping a supermassive black hole from destroying everything.”

Beyond that, Audible has revealed exactly what listeners can expect when The Infinite Extent releases on September 10:

In The Infinite Extent, the Bobs face their most daunting challenges yet: determining who built the mysterious Pan Galactic Federation wormhole network and why, investigating a derelict alien spaceship, cracking faster-than-light warp drive technology, helping tens of thousands of refugees find a new planet, and racing to prevent the supermassive black hole Nemesis from destroying the Milky Way. With geeky science, sarcastic clone banter, and pop-culture references (including plenty of nods to Star Trek and beloved sci-fi franchises), The Infinite Extent delivers everything fans have come to love, in multitudes.

For his part Porter says that, despite narrating more than 500 audiobooks, The Bobiverse series holds a special place in his long career.

“After ten years and six audiobooks, the Bobiverse still surprises me,” Porter says. “Bringing dozens of Bobs to life in audio is unlike anything else I’ve narrated – each one needs its own voice, its own rhythm, its own universe. Dennis has this gift for making you care deeply about characters who are technically lines of code, but they struggle, they disagree, they evolve. The Infinite Extent is the most ambitious installment yet, and I’m honored to give it a voice.”

The first entry of the Bobiverse series, titled We Are Legion (We Are Bob), was first published as an Audible Original in 2026. Since then, the franchise has expanded beyond audio with Simon & Schuster releasing deluxe hardcover editions in Fall 2025 .

The series has also been optioned by Lord Miller Productions, the production company behind The Lego Movie, Spider-Man: Into the Spider-Verse, and Project Hail Mary.

For more information on The Infinite Extent, you can head over to Audible starting today.

Michael Peyton is the Senior Editorial Director of Events & Entertainment at IGN, leading entertainment content and coverage of tentpole events including IGN Live, San Diego Comic Con, gamescom, and IGN Fan Fest. He's spent 20 years working in the games and entertainment industry, and his adventures have taken him everywhere from the Oscars to Japan to Buenos Aires, Argentina. Follow him on Bluesky @MichaelPeyton