We are rapidly approaching the launch of Castalia Unlimited. More than 100 200 titles are already available on the platform, many of which are exclusive to Unlimited and have never been available for reading in English before. We are still on track to launch on Monday.
It’s important for any paid subscribers to this substack to read this next part: Castalia Unlimited is entirely separate and distinct from your subscription on this substack. Everyone can continue to support Castalia’s translation efforts, exactly as you do now, with one new translation being delivered in your email every week. We appreciate the support, very much indeed.
That being said, in order to express our appreciation for those who have supported our translation efforts from the start and made the whole project possible, everyone who is a paid subscriber to the Castalia Library substack and was subscribed before 2 November 2026 is eligible for a free one-year subscription to Castalia Unlimited. All you have to do is register your email there and we’ll grant the appropriate subscription. Regular subscribers can register and will receive a free one-year Basic membership while Founding subscribers can register and will receive a free one-year Premium membership. These one-year free memberships are not contingent on whether you continue to subscribe here or not.
Unlimited Basic: 5 additions to your bookshelf of your choice + the Book of the Month
Unlimited Premium: 10 additions to your bookshelf of your choice + the free Book of the Month + audiobook options. We haven’t made a final decision, but it’s safe to assume that one audiobook = 3 ebooks. So various combinations will be available to the Premium subscriber.
If you are a paid subscriber here, you will also continue to receive your new translation of the week, which will never be the Unlimited Book of the Month.
All current Library, Libraria, History, Cathedra, and Chateau subscribers will receive free Unlimited Basic memberships as long as they continue to subscribe to that subscription. So please register on Unlimited at your earliest opportunity; if we somehow miss you, don’t worry, we’ll sort it out and ensure you get the access you’ve been promised.
Audiobooks will not available at launch and will not be available until sometime in the new year. We hope to add them on the very early side of it. But we are already producing our own custom AI audiobooks, the quality is very good, and we have already proven that they are viable from a production perspective. Here is an example of test based on A THRONE OF BONES using one of our custom AI voices, which was produced from, and with the permission of, the original audiobook reader, Jeremy Daw. Note that this sample is the AI recreation, not the organic human version that will be available on the site.
As you can see from the screenshot below, we have already begun to include multiple language editions of the various titles, such as the murder mysteries of Augosto De Angelis, available in both English and the original Italian. Multiple language editions are indicated by flags on the title’s cover.
We’re also very pleased to say that several excellent authors have graciously given us permission to include a large number of their works in the Unlimited library. At the request of several testers, we have also begun adding several public domain titles that we believe are worthy additions to the digital library, specifically, the sort of titles that merit being bound in leather one day.
If you haven’t signed up for the Unlimited mailing list yet, you can do so here. If you are a paying subscriber to this site, please do so with the same email with which you subscribed so we can make sure you have access to your free one-year subscription from the start.
We believe Castalia Unlimited is going to be the most important book platform in the world within five years. And we invite you to be part of making that happen.