Amazon is running a Kindle Store sale on the "Dungeon Crawler Carl" LitRPG series, letting readers pick up all eight ebooks for roughly $21. The discount comes as the series' popularity is surging, with an eighth book released in May, a TV adaptation in development, and a tabletop RPG due out in December, making it a timely moment for new readers to jump in cheaply.

Four of the eight titles are discounted to $0.99, while the others remain at their regular Kindle prices, meaning buying all eight individually rather than the bundle saves only about $0.70. By comparison, physical hardcover editions are far pricier, with the latest instalment, "A Parade of Horribles," listed at $22.38 alone. Readers can also access the whole series through Kindle Unlimited, which offers a 30-day free trial before reverting to an $11.99 monthly subscription.