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 Hottest Core Rulebooks from Hydra Cooperative
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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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Ruins & Ronin

Ruins & Ronin


A complete set of rules for playing an old school fantasy game (Swords & Wizardry compatible) in a medieval Japanese-like setting.  What's inside: Unique player classes and races. Japanese-styled weapons, equipment and magic items.  A complete 32-page beastiary of monsters and spirits. Reviews: “What you get is an old school Japanese "flavored" fantasy RPG, where bujin,...   [click here for more]
Hydra Cooperative  $2.00

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Strange Stars OSR Rule Book

Strange Stars OSR Rule Book


It's the far future, Old Earth is lost and shrouded in legend, and the children of paleo-humanity have long ago populated the stars, branching into new forms and strange cultures. Adventure is measured in light-years! STRANGE STARS is a setting where modern transhuman science fiction meets classic 70s space opera. Now you can explore the STRANGE STARS...   [click here for more]
Hydra Cooperative  $5.55

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Strange Stars Fate Rule Book

Strange Stars Fate Rule Book


It's the far future, Old Earth is lost and shrouded in legend, and the children of paleo-humanity have long ago populated the stars, branching into new forms and strange cultures. Adventure is measured in light-years! STRANGE STARS is a setting where modern transhuman science fiction meets classic 70s space opera. Now you can explore the STRANGE STARS...   [click here for more]
Hydra Cooperative  $5.95

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Strange Stars

Strange Stars


It's the far future, Old Earth is lost and shrouded in legend, and the children of paleo-humanity have long ago populated the stars, branching into new forms and strange cultures. Adventure is measured in light-years! STRANGE STARS is a setting for any game where modern transhuman science fiction meets classic 70s space opera. Join a salvage mission to steal ancient tech...   [click here for more]
Hydra Cooperative  $9.99

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