Hollow Earth Expedition

Hollow World Expedition
RPG published by Exile Game Studios
Rule System	Ubiquity
First Publication	2006

Hollow Earth Expedition, also called HEX, is a pulp adventure RPG by Exile Game Studios using the Ubiquity System set in an alternate 1936. It's pulp par excellence, taking the best bits from both genuine stuff and anything even adjacent to it, with inspiration ranging from Verne books to the Mummy movies.

The gist, as the name implies, is that Earth is actually hollow in the middle. While the Corebook says in a few places that campaigns can take place on the surface world, the meat of the setting lies beneath our feet. The surface has a little bit of organized crime and noir-style intrigue, as well as some good old fashioned Nazi fighting, but the Hollow Earth has dinosaurs, Amazons, pirates, the ruined remnants of the Atlantean civilization, and also Nazis (pretty much every adventure module involves the PCs having a boot party on some Nazi mooks at least once, not that this is a reason for complaint).

There are no classes, players instead coming up with Archetypes and Motivations, then building a character around them. Each character also starts with a Flaw that, if roleplayed well, can earn them Style Points that give them bonus dice in the future. Despite sounding like a recipe for a disaster, it largely avoids "iTs WhAt My ChArAcTeR wOuLd Do" bullshit, and can be an effective way of introducing both interesting and hilarious moments in a session. Players take the roles of explorers, scholars, treasure hunters, pilots, but also film-makers, bored rich folks, journalists and many, many more.

The game had misfortune of being mis-managed right from the start, on multiple levels. Its creators managed to make an universal game system, and one that works particularly well with dashing pulp characters and archetypes... then decided to sell it on the appeal of the setting of the Hollow Earth, rather than general pulp adventure. Then they've decided that sure, let's license the system to other companies, but never, ever printing Ubiquity system itself, for players to simply buy that. This makes an excellent game to play and unique, while user-friendly system... that you probably never heard about, since its own makers had no idea what they are handling. Another aspect that fucked the game in the ass was a Kick-Starter scam pulled with Perils of Mars expansion that not only never surfaced in any way or form, but ultimately lead to the company closing the shop - just to avoid dealing with the legal fallout of pocketing a bizarrely small sum of 25 grand without producing the expansion itself. That stint killed any lasting goodwill toward the game, tarnished the system's reputation and prevented its comeback, since it cut short the negotiations with Triple Ace Games (who licensed Ubiquity for their own games) to release a stand-alone Ubiquity ruleset.

The Backstory

The background for HEX is that the Atlantean Civilization once ruled the Sol System and likely some places beyond it, too (yes, Atlantean like the lost city of Atlantis). They discovered the Hollow Earth and built a great empire, produced insane technology out of mythical orichalcum, the usual. They also defeated and banished some Lovecraftian style Old Ones at some point. Eventually, the Atlanteans got bored up on their pedestal. Two of the three Atlantean Castes, the Warriors and the Priests, started bitching at each other about who was actually the best and deserved to lead. The third Caste, the Builders, realized this shit was going to go south real quick and came up with a compromise; the Priests could have Venus all to themselves, the Warriors could have Mars, and the Builders would get Earth. All sides liked this idea.

The Builders then pulled a sneaky on their erstwhile comrades. After the vast majority of the Warriors and the Priests had passed through the teleportation gates to their respective new worlds, the Builders closed the gates and broke them, trapping the Warriors and the Priests and saving the Earth from the inevitable conflict between the two. The Builders noped off into the Hollow Earth to chill for a while and enjoy so goddamn peace and quiet for once.

Eventually, the Builders disappeared from Earth for reasons unknown, though not before interbreeding with humans, resulting in some Atlantean-Blooded people still showing up in 1936. It's open to speculation whether humans are descendants of Atlanteans, creations of them, or an independent species altogether. Now there's a shitload of secret societies on Earth that want to use or hide the Hollow Earth for their own ends. The surface world is the same in this version of 1936 as the real world was, more or less. It's what lies below that's truly extreme.

The Hollow Earth

The Hollow Earth is a lot like the surface in a lot of ways. It's got mountains, forests, oceans, deserts, etc. The similarities kind of stop there, though. There's two main reasons for this: 1). An all suffusing aura of vitality probably caused by Atlantean tech that makes plants and animals grow bigger and stronger, also making healing happen faster, and 2). a time dilation effect that makes time pass much slower inside the Hollow Earth than without. An explorer in the Hollow Earth can encounter the aforementioned dinosaurs and pirates, but also primitive savage tribes, cargo cults, Roman legionaries, Conquistadors, Cossack raiders; if your GM can think of it, it can be in the Hollow Earth. These latter three would likely be descendants of the originals that ended up stranded in the Hollow Earth, using and replicating technology familiar to their ancestors because the environment creates a constant struggle for survival that leaves little room for scientific pondering and invention. There is a small sun hanging dead center inside the Hollow Earth, keeping the climate hot and humid pretty much year round.

People tend to reach the Hollow Earth by a few ways. The Bermuda Triangle and the Dragon Triangle are two of them, as well as the openings on the North and South Pole. There's also drill machines, wandering through deep caves, and Atlantean warp gates hidden in the deep places of the world. Here's where we get to the big question; how the hell has the Hollow Earth remained a secret for so long? There are a few reasons, actually. Thing is, people who end up inside the Earth rarely realize that's where they are at first. The transition from surface to within is gradual, and the clash of the outer and inner climate makes for huge, almost constant plumes of fog and mist to obscure one's view. Compasses and radios don't work inside the Earth on account of magnetic field fuckery. By the time people realize where they are (if they've survived the beasts and natives for that long), they're generally far away from their entry point and have no idea how to get back to it. Those that do manage to get back realize a shitload of time has passed, and those that speak openly about their discovery find themselves attacked by ork snipers sent by a group called the Terra Arcanum; a secret group from the dawn of human history whose entire goal is to keep the dangerous tech of the Hollow Earth away from the people of the surface world.

Inside the Hollow Earth, explorers have to watch out for carnivorous plants, creatures previously thought to be extinct or mythical like yetis and lizardmen, or even your typical tribal cannibals looking to have you for dinner (buh dum tss). There are also ruins full of deadly traps. However, if a group of adventurers can brave the dangers, they can get their hands on some crazy powerful Atlantean tech and priceless treasures that will quickly not be so priceless once brought to the surface and put up for grabs on the black market (the game doesn't specifically have rules for selling treasures but c'mon...these are PCs we're talking about here.)

Atlantis is actually a place the PCs can visit, thanks to one of the splatbooks. It's currently ruled over by some scrubs called the vril-ya that claim to be Atlantean but are actually their former servants pulling some rote memorization ritual bullshit to keep all the Atlantean tech around them functioning. The vril-ya may or may not be aliens or a manufactured race built to serve the Atlanteans.

The Game

It's a classless, skill-based point-buy game, using large dice pools, running on a custom engine known as Ubiquity. If you come from the WoD background, you should feel right at home with how things work, are scaled and progress. Stats range from 1 to 5 and skills are 0-5. Corresponding values add up, along with gear and situational modifiers and give you number of dice to roll. Which means you can get quite a bucket, but don't sweat it - it accounts for that and allows to simply pick a fixed outcome of the roll (average of the number of dice used for roll) and just move on, which speeds shit up significantly.

Since the game is designed for pulp in mind, you by default are playing larger than life characters and most of the things on your path are just chaff to go through. This means four things all at once: it's relatively easy to get hurt, but you can't just randomly drop dead on the spot; combat, even against groups, is easy to resolve; despite the previous two things like tactics, flanking, ambushes and what not still affect the combat, so it's not just whacking things around; and you do damage that comes from a combination of skill and/or gear, in fixed values, rather than an additional damage rolls. As a result, the gameplay loop is extremely fast, because you have the only value you need for everything pre-written in your character sheet and might even opt to not roll at all, if you think the number is sufficiently large.

Outside combat, this also allows to be that pulp character, rather than some schmuck, since variety of actions your characters is supposed to be good at are pretty much auto-resolved in trivial situations. And, again, you might outright opt to not roll at all, because why even bother with a regular Piloting roll, when your character is an ace pilot that further specialise in fighter planes? Unless, of course, you really like to roll those 17 dice you've got there.

And this is unfortunately the ugly aspect of the game, at least for newfags. Originally, it came with its own custom dice, of special d8. Yeah, yeah, I know what you're thinking - game runs on custom dice, what a shitshow. Well, you don't have to use it, the game allows to replace it with any other dice of your choice, as long as you have a lot of them or use part of the auto-resolve. The custom dice itself was specifically made for the rules, with different values on their faces, representing the possible outcome: three 1s, three 2s and three 3s. So instead of, say, rolling six dice in a check of 6, you would pick just two 3s and roll those, their possible outcomes corresponding to rolling whatever. The ugly part of this custom dice doesn't come from it existing, but rather that the company making them went down under in mid-10s, so you are shit out of luck without making your own, or just stuck throwing around a bucket of regular d6s. Or going for fixed values to ignore rolls entirely.

The game is heavy on gear, since it contributes third part of the resolution in all the mechanics, after stats and skills. An incompetent character with good gear can still succeed, and competent character equipped with a stick and a shoelace will still manage just fine. You can probably figure out what happens when a professional is also using custom-made equipment. The importance of gear extends well beyond combat situations, too. Your bumbling elderly professor can still climb up a cliff when properly kitted (and aided by someone more agile), because that climbing gear will still count as if he had 3 ranks in Athletics. Items aren't just props, but they come with defined, numerical advantage and rules on how to "stat" various things, even on a fly. This prevents the non-combat situations from devolving into either doing "mother may I" to the GM or relying entirely on players creativity or narrative tricks when they lack related skills, simply substituting the lacks with gear. The result is a game that's idiot-proof and also very fast (and loose) to play - you pretty much can't make a character that sucks. And even if you deliberately did so, it can be easily fixed with the right gear.

Style Points, the meta-currency of HEX, for the most part avoid the standard issue of meta-bullshit that change the situation or drastically alter the outcome of the situation. What they do is increasing your dice pool - rather than the roll outcome - and help mitigate damage or bolster your allies. Always at 1:1 basis. Their economy is also different than typical meta-currency. First of all, you are expected to non-stop gain and spend them, rather than them being some rare pool worth hoarding - if you didn't earn five or more of them during a single session, either you didn't contribute at all, or your GM is a moron. Plus, they are only ever awarded them for your actions, rather than talking in funny voices or LARPing. In essence, this means you have to stick to what your character would *actually* do as defined by their archetype, backstory and traits, rather than insisting on doing what you feel like. There are two issues with this entire sub-system: everyone at the table (and especially the GM) must be fully aware how disposable and easy-to-earn those points are, and that they aren't like FATE Points, where you only get them for setting yourself up for bad outcomes first. Otherwise, the whole thing can horribly backfire on the group.

The Books

So far, HEX has five books and one booklet. All of them are currently out of print and reach astronomical prices, so be warned if you want to get your hands on the game in paper format. PDFs are readily available, both in shop stock and ready to pirate. The books are:

• Hollow Earth Expedition: Pulp Adventure Roleplaying: HEX's Corebook. Does the obvious thing of introducing the rules and character creation, has a bestiary, sample NPCs, and a solid variety of equipment. Gives insight in the broader strokes of the Hollow Earth as an adventure setting, as well as painting a picture of what the surface world looks like in 1936. It touches on a few secret organizations as potential adversaries.
  • It came with a reprint, but unfortunately, it is in a different format, which messes up the page count, not aligning with the original print and the PDF version. It's also with a soft, paper-back cover, looking like a novel.
• HEX: Addendum: A booklet originally sold with official GM screen that covers alternative rules for combat order - Continuous Combat - that are only alluded to in the main book. Continuous Combat allows to flip the game into more "tactical" approach, replacing traditional initiative order into fluid speed counter, where faster characters and attacks can not only move first, but get their next move sooner than slower people. This in turn makes melee and martial arts far more viable and also allowing to disrupt more powerful attacks and spells that take aim/focus/extra time.
• Secrets of the Surface World: Splatbook that expands heavily on, as the name implies, things relating to the surface world of Earth and how they can interact with the PCs. SotSW introduces new character options and delves much more deeply into secret organizations like the Terra Arcana and the Thule Society. It has a pretty impressive expansion on vehicles and equipment, too, including a neat section of weaponry that specifically divides guns up according to which surface world military they are standard issue for. This book also introduces (finally) rules for psychic powers, sorcery, and mad science.
  • This expansion is pretty much a must-have if you plan to play the game for the pulp and not the ultra-specific, super-narrow Hollow Earth setting. It also delves into various game mechanics that the source book barely mentions, so even if you stick to the prescribed setting, you should still read it anyway.
• Perils of the Surface World: A book containing four adventure modules that can all be linked together into an overarching story or used individually. The real reason to bother aren't the scenarios (they aren't bad, but barely hide what they've ripped off), but the sub-chapters ending each of them, as they supplement existing and add various new mechanics for martial arts, horror vibes, magic rituals etc. So if you are playing someone else than members of Challenger's expedition, you will need it.
• Mysteries of the Hollow Earth: Focuses much more on the Hollow Earth itself, introducing mechanics for playing as Hollow Earth natives, namely cargo cultists and Amazons. More prominently, MotHE intros playing as various beastman races (apemen, lizardmen, hawkmen, and a few more. Not these guys). Oh, and also women. Beyond that, MotHE delves into some new locations inside the Hollow Earth, including El Dorado and even Atlantis itself. Includes rules for creating magic artifacts and expands the bestiary, as well.
• Revelations of Mars: Hollow Earth Expedition IN SPACE. Puts a planetary romance spin on HEX, a la Barsoom. Alongside describing potential ways to get to Mars, RoM shows us what Mars looks like and it ain't pretty, like putting John Carter on fucking Athas; the planet is dying, the last bastions of civilization are squabbling city-states driven by slave labor, and you're probably going to bleed out in the Martian desert or a gladitorial arena before accomplishing anything meaningful. We learn a great machine (creatively called the Great Machine), is a terraforming device that makes Mars habitable but it's failing and has been slowly doing so for centuries. The book introduces several alien races, most notably the dheva, who are pretty much human but have four arms, green skin, a penchant for hedonism, and a dislike for clothing (eat your heart out, Captain Kirk). Though there are some prebuilt alien races, Revelations has rules for building your own and specifically says there are others on Mars that aren't listed. RoM also introduces robot PCs, new psychic powers, and new weapons such as rayguns, blasters, and fuck-off big melee weapons specifically designed for species with more than two arms.

Gallery

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  In case you ever needed your own set of Ubiquity dice, make three of each colour.