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The World's Largest Dungeon

Created by World's Largest RPGs

The World's Largest Dungeon is a 1,600+ page, four-book behemoth megadungeon. Experience the Guinness World Record-winning dungeon crawl like never before - fully updated to 5E of the World's Most Popular Roleplaying Game!

Latest Updates from Our Project:

📘 Book 4 PDF Is Now Available!
5 months ago – Thu, Jan 22, 2026 at 08:43:11 AM

Hello again, Delvers!

The PDF for Book 4 of the World’s Largest Dungeon is being distributed with this update! Check your inboxes - delivery is once again going through DriveThruRPG.

If you don’t see your claim email or run into any issues, just reach out:
 📧 [email protected]
 💬 Or join us on Discord and open a ticket!

Missed the campaign?
The pre-order store is still open - for now. If you’re interested in any physical rewards like the slipcase set, boss cards, minis, dice, or maps, this is your last chance to grab them before we move toward production.

Thank you again for your support!

📚 Book 3 Digital Files Distributed!
5 months ago – Mon, Jan 12, 2026 at 09:02:41 AM

Hey everyone! A quick update for all of our backers:
✅ Book 3 PDF and Region Maps have been distributed.

There was an error that caused the distribution email not to go out to everyone initially - this has now been resolved. You should have received an email to claim your files from DriveThruRPG. If not, see below!

📦 Moving Forward:
All digital files will now be distributed exclusively through DriveThruRPG.
This ensures more reliable delivery and easier access going forward.
📬 The initial delivery went through both email and BackerKit so Pay-in-4 backers could receive files without delay. But from here on out, we will no longer use BackerKit for digital file distribution.

💬 Having trouble accessing files on DriveThruRPG?
Email us at [email protected] or open a ticket through BackerKit, and we’ll get you sorted.

📕 Missing a File?
Please contact us if you’re missing any of the following on DriveThruRPG:
  • Book 1, 2, or 3 PDF
  • Region Maps for Book 1, 2, or 3

🛠 Found an Issue?
The beta is now closed, but if you catch any typos, layout issues, or errors, please hop into our Discord and #open-a-ticket. It’s the best and fastest way to get your feedback to our team!

📖 Book 4 is coming soon... stay tuned!

Book 2 Delivery
6 months ago – Fri, Dec 12, 2025 at 06:20:28 AM

📘 Book 2 PDF Now Available!

Book 2 of the World’s Largest Dungeon 20th Anniversary Edition is now live and ready for download!
You can access it by heading to your Backerkit Digital Downloads page.

🛠️ Book 3 is nearly ready, so keep an eye out - it's not far behind!

As always, if you have questions or want to hang out and chat dungeon design, you can find us in Discord.

Happy delving!

Book 1 Delivery and Fulfillment Timeline Update
8 months ago – Tue, Oct 21, 2025 at 01:21:39 PM

Hi everyone, We're excited to share that the Book 1 PDF has been delivered! You should be able to access it now through BackerKit digital downloads. Happy delving!

Also, we need to provide an update on fulfillment as well. We're pushing the physical fulfillment estimate to July to ensure we deliver the quality products you deserve. This accounts for our current development pace, the Chinese New Year, and even a couple of unforeseen hiccups along the way. 

Our editing process is taking longer than we initially anticipated, and rather than rush it, we want to make sure World's Largest Dungeon is as polished and perfect as possible. This extra time will allow us to double-check the details and deliver something we're truly proud of and that you'll love. Shout and special "Thank you!" to all of our beta participants and playtesters for their excellent work during our beta phase.

We're absolutely going to try to deliver earlier if we can, but we wanted to set this date now to give you a realistic timeline and keep you in the loop.

Thank you so much for your patience and continued support. It means the world to us, and we can't wait to get the finished book into your hands.

Thank you! 

Book 2 Beta Release
9 months ago – Mon, Sep 29, 2025 at 02:55:45 PM

Book 2 Beta

The long-awaited Book 2 Beta is ready for your review! This book was distributed a little differently, via Backerkit directly, so check your email for the downloads!

You can leave feedback for Book 2 Here

Thank you so much for the hundreds of suggestions and fixes you have all submitted. Book 1, 2, and 4 Beta are now closed.

Fulfillment

We are working as fast as we can while maintaining quality at the absolute forefront. The beta test brought a few more issues to light, and we are dedicated to putting out a high-quality product, so we are not going to release anything or start the presses until it meets those standards of quality.

That said, we anticipate Book 1 to be ready for its full digital release imminently, likely the next couple weeks, so you can get started on your epic crawl into this epic megadungeon. 

We will have a better picture of full digital fulfillment after the Book 2 beta, and we'll update you as soon as we can.

Thanks, Delvers!


FAQ

I didn't receive the beta content.
Check your email and spam filter for emails from Backerkit

Why didn't I receive a survey?
The 3 most common causes of this are (1) Your Backerkit email is not your main email, the survey will go to the email associated with your Backerkit account. (2) The email from Backerkit is in your spam folder. (3) You are using Pay-in-Four and it hasn't been sent yet.

Where do I report mistakes?
Please use the form linked in the email where you received the beta!

Where can we discuss the beta or World's Largest Dungeon?
Join our discord!

I need support, or have a question
Join our discord! or email [email protected]