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 Hottest Old-School Revival (OSR), Old School/Classic from Hydra Cooperative
 
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What Ho, Frog Demons

What Ho, Frog Demons


Weighing in at 112 pages of pure Slavic/Vancian/Moorcockian acid fantasy, What Ho, Frog Demons is the fourth stand-alone, mini-sandbox adventure in the Slumbering Ursine Dunes series. Fever-Dreaming Marlinko was an experiment in reforming the city setting book: sloughing off the tedious bits and cranking up the most adventurable qualities. What Ho, Frog Demons is...   [click here for more]
Hydra Cooperative  $12.00 $10.20

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Misty Isles of the Eld

Misty Isles of the Eld


Come visit the acid fantasy mini-sandbox of the Misty Isles, a hellish pocket plane that's brutally displaced a bucolic paradise. Marvel at its massive grub-ridges, shake at the body horror of its protein vats—and watch as your players dynamically unleash the Anti-Chaos Index through their own in-game actions. Misty Isles of the Eld is a stand-alone sequel to Slumbering Ursine Dunes...   [click here for more]
Hydra Cooperative  $12.00 $10.20

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Slumbering Ursine Dunes

Slumbering Ursine Dunes


Run, play or splice up 66 pages of mayhem and weirdness in this Slavic mythic-inspired (with an acid fantasy-twist) mini-sandbox for Labyrinth Lord or the well-aged fantasy rpg of your druthers. What You Will Find Inside: • A 25-site pointcrawl of the otherwordly Slumbering Ursine Dunes region. Beyond the big ticket adventure sites you will find along the way...   [click here for more]
Hydra Cooperative  $9.00 $7.65

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Fever-Dreaming Marlinko

Fever-Dreaming Marlinko


Visit Marlinko, a borderlands city where life takes a strange fever-dream cast, in this 72-page urban adventure fantasy supplement. Part city-setting, part full-blown adventure, Fever-Dreaming Marlinko is a stand-alone companion to the Slavic acid fantasy weirdness of the Slumbering Ursine Dunes. What you will find inside: Background and hooks...   [click here for more]
Hydra Cooperative  $9.00 $7.65

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Operation Unfathomable

Operation Unfathomable


BEHOLD the Underworld in all its bewildering majesty as titanic Chaos Godlings and their unsavory cults make genocidal war upon each other! SEIZE eldritch artifacts and treasures far above your lowly station! THRILL as you throw the gauntlet of your life into the smug face of the unknowable and embark upon OPERATION UNFATHOMABLE!...   [click here for more]
Hydra Cooperative  $12.00 $10.20

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The Hill Cantons Cosmology

The Hill Cantons Cosmology


The gods and cosmic weirdness of the Hill Cantons come alive(ish) in this supplement. Currently only available to backers of the Dunes kickstarter. ...   [click here for more]
Hydra Cooperative  Pay What You Want

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By this Poleaxe

By this Poleaxe


By this Poleaxe is a four-page set of rules to allow a GM to run small-scale battles or skirmishes involving 15-120 combatants on each side without miniatures. The rules have been specifically designed to work with Labyrinth Lord or similar well-aged fantasy game. Can also be used in conjunction with By this Axe, a simple set of fantasy miniatures...   [click here for more]
Hydra Cooperative   FREE 

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Hill Cantons Compendium II

Hill Cantons Compendium II


Being a Collection of Player Options and House Rules Various and Sundry for Classic Fantasy Role-playing Games Old and Dear.    What you will find inside: Nine variant old school fantasy (and Labyrinth Lord)-compatible player classes: the Mountebank, Chaos Monk, Robo-Dwarf, Feral Dwarf, White Wizard, Half-Ogre, Black “Halflings”, Pantless Barbarian and, of course,...   [click here for more]
Hydra Cooperative  Pay What You Want

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Operation Unfathomable Map & Char Sheet

Operation Unfathomable Map & Char Sheet


This free pdf includes the 11" x 17" Operation Unfathomable DM's map by Jez Gordon and the player's map and character sheet by Karl Stjernberg. FOR USE WITH OPERATION UNFATHOMABLE ...   [click here for more]
Hydra Cooperative   FREE 

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Operation Unfathomable Players' Guide

Operation Unfathomable Players' Guide


For use with Operation Unfathomable (Swords & Wizardry)! Players: READ THIS BEFORE ENTERING. Inside this handy player-facing accessory you'll find Unfathomable Comics! A semi-painless introduction to the feel of the setting 2 playable species: Underworld Otter and Woolly Neanderthal 2 character classes: the Citizen Lich and the Underworld Ranger Unsavory spells Weird new items A partial,...   [click here for more]
Hydra Cooperative  $4.00 $3.40

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