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Hollow Earth Expedition RPG
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Hollow Earth Expedition RPG

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First we discovered that the Earth is round.

Then we discovered that it’s hollow.

Now we must keep its secrets from falling into the wrong hands.

Explore one of the world’s greatest and most dangerous secrets: the Hollow Earth, a savage land filled with dinosaurs, lost civilizations, and ferocious savages! Players take on the roles of two-fisted adventurers, eager academics and intrepid journalists investigating the mysteries of the Hollow Earth. Meanwhile, on the surface, world powers and secret societies vie for control of what may be the most important discovery in all of human history.

Set in the tense and tumultuous 1930s, the action-filled Hollow Earth Expedition is inspired by the literary works of genre giants Edgar Rice Burroughs, Jules Verne, and Sir Arthur Conan Doyle. The subterranean action is powered by Ubiquity, an innovative roleplaying system that emphasizes storytelling and cinematic action.

 Customers Who Bought this Title also Purchased
Reviews (9)
Discussions (5)
Customer avatar
July 26, 2018 8:11 am UTC
So, has this been updated to read well on a tablet? I’d like to get it, but not until I understand what I’d be getting.
Customer avatar
Samuel K July 26, 2018 8:08 pm UTC
Nope. This is still the PDF of the earlier 8.5" x 11" version of the rules, and it's about 20 MB. If EGS would simply upload the PDF of the most current edition of the rules, which is a handy digest sized book, that would help a great deal, and it's been brought up more than once in more than one context, but for whatever reason, they seem unwilling to do that.
Customer avatar
July 27, 2018 12:38 pm UTC
Thanks for replying. Frustrating it’s not updated.
Customer avatar
Doug M September 25, 2018 10:17 pm UTC
My copy wouldn't work on a tablet either. is a free online PDF file compressor. I went there and compressed the HEX PDF from 40.8M down to an easily manageable 16M. It only took a few seconds. The compressed HEX works great on my tablet with no noticeable loss of resolution.
Customer avatar
Dino Z March 07, 2016 3:24 pm UTC
Very badly optimized! Impossible to read on a tablet with 20 sec loading time per Page.
Customer avatar
Doug M September 25, 2018 10:18 pm UTC
My copy wouldn't work on a tablet either. is a free online PDF file compressor. I went there and compressed the HEX PDF from 40.8M down to an easily manageable 16M. It only took a few seconds. The compressed HEX works great on my tablet with no noticeable loss of resolution.
Customer avatar
Austin F October 15, 2015 5:33 am UTC
Why does the PDF cost the exact same as the hardcopy? I would like to get this (already own paperback) but there is not way I am paying the same cost for the PDF.
Customer avatar
Samuel K May 09, 2015 5:30 pm UTC
I second the motion for an updated PDF. The smaller size would display better on my computer screen, it would have errata incorporated, and it would match the pagination of my physical book.
Customer avatar
Samuel K March 03, 2016 5:50 pm UTC
Is there ANY movement on this at all? Now that I'm moving more and more to PDF gaming, and own a tablet, the digest sized rulebook would work SO much better for me.
Customer avatar
John P V August 30, 2014 4:49 pm UTC
Just picked up the new paperback version. I love it. I would like to see an updated PDF to reflect any changes made for the new edition, preferably one that doesn't cost more than the dead tree version.
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Product Information
Gold seller
Rule System(s)
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File Size:
46.75 MB
Original electronic
Scanned image
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File Last Updated:
May 11, 2016
This title was added to our catalog on November 24, 2006.