A doomed starship warps through the abyss and crashes into a sword-and-sorcery world, unleashing cyborg demons and alien tech. Classic science-fantasy meets 90s-inspired radness as high-level heroes face the forces of chaos in the hell-corrupted wreck.
Under a burning sky rent asunder by eldritch storms, a jagged wreck from an unknown world vomits corruption. Abominations of fiendish flesh and mirrored chrome spit hot plasma death from iron orifices. Amid howls for blood and cries of pain, priceless artifacts of alien technology sound a call to adventure.
Inspired by classic modules and early-90s dark industrial aesthetics, HELLBLASTER: Against the Cyberfiends is a location-based OSE module for high-level characters, set in a crashed spaceship captured by the forces of hell.
Designed for use with Old-School Essentials. Contains references to the content of the OSE Demonic Grimoire and the OSE core rules.
A dimension-warping space anomaly sends the Iradian military science vessel Morningstar hurtling through the abyssal realms before crashing over the wild borderlands of a world of sword and sorcery.
The wreck of the once-proud ship is now the playground of various fiendish factions who have turned the spacefaring vessel’s technology to their own ends, merging dark magic with machines to spread havoc and carnage.
Whether they seek to loot unique artifacts or stem the tide of chaos, adventurers must contend with cyborg demons, twisted cults, devious devices, and other threats from beyond their world. Will they quake in fear, or triumph against this doom from beyond the stars?
Heavy metal meets unholy flesh in HELLBLASTER. These are no everyday devils! They've upgraded.
Classic fiends from fantasy game history and the new horrors of Necrotic Gnome's Demonic Grimoire have enhanced themselves with advanced technology for heavy-duty firepower and devious deception.
Pit your player characters against 3 rival factions:
The Doombringers
Muscle-bound and metal-clad war demons that worship corrupted alien weapons as unholy relics.
The Cult of Pleasure
Seducers and deceivers who dazzle with addictive, hi-tech entertainment.
The Machine Collective
A machine spirit of possessed malware that commands deadly automata.
Each faction presents its own distinct threat and pursues its own goals. Of course, wildcards, NPCs, and unlikely allies all lie in wait!
The demons don't get to keep all the fun toys for long. Seize supercharged weapons from their cold, dead claws and turn them on the cyberfiends with a vengeance.
Blasters, lasers, hulking powered armour, mechanised melee weapons, and more are at your disposal to rip, tear, and sear through the hordes of hell. Enhance your body and mind with alien tech to fight the forces of chaos, even at the cost of your soul.
Bloodstar Productions is a collaboration between writer Nicholas Montegriffo and artist Raymond De Jesus.
Nicholas Montegriffo was present in the early days of Necrotic Gnome, having a hand in developing the scenario that would become Winter's Daughter. He’s also the author of Necrotic Gnome’s upcoming Quick Delve #6: Red Veins.
RaymondDe Jesusis an illustrator/cartoonist with a love of old-school gaming, pulp science-fantasy action, and the OSR's rebel spirit.
Our offering for OSE Month is an homage to science-fantasy mash-up modules of the hobby’s golden age and the radness of early ‘90s occult-industrial video games. Think DOOM meets Expedition to the Barrier Peaks.
Despite our love of cyberpunk, all content in HELLBLASTER: Against the Cyberfiends is 100% human made! All AIs in the module are fictional and can be killed, if you want.
You get the printed booklet and PDF of the adventure.
BLOODSTAR MARINE $35
You get the PDF and print adventure, and give us a little more money to make cool stuff in the future. We love you very much, and you get a free re-roll when you play with the creators.
HELLBLASTER: Against the Cyberfiends is 90% written, with minor editing, layout, and art additions to go as we finish playtesting and prepare to go to print in September. We’re asking for your support to fund perfecting, printing, and shipping the best version of this kickass zine adventure to your gaming table.
Bloodstar Productions is a new venture by independent creatives who need to pay for bills, coffee, and therapy like everyone else. Show us some love, and we’ll keep making cool stuff!
Shipping and fulfillment are being handled by Exalted Funeral, with Group Shipping savings when you order multiple OSE Demon Month products!
Estimated shipping rates:
US: $9-$12
CA: $18-$20 UK: $10-$13 EU + EFTA: $12-$15 AU: $14-$17 Rest of World: $20-$25
Estimated delivery timeline:
PDF Delivery: Aug 2026
Print Delivery: Jan 2027
SAVE BIG with DISCOUNTED GROUP SHIPPING!
Thirteen of the seventeen projects in OSE Month are participating in group shipping with Demonic Grimoire. This means all rewards from these projects will be grouped and shipped together so that you can back multiple projects without paying a ton for shipping! For instance, if you're in the US and back the Demonic Grimoire Ritualist Pledge Level + 9 other projects, you are paying up to $29; saving you $124 vs. the approx $153 if you had backed each project individually.
Other projects participating in group shipping are:
Please note that the values in the table are estimates, to the best of our knowledge, at the time the campaign launched, based on shipping fees and rates from our fulfillment warehouses. Please see the FAQ section for more information on shipping.
Perfect for one-off games or if you don’t want to risk your faves, we’ll supply ready-to-print pre-generated characters, ready to rumble, and with black-and-white illustrations.
Expect characters based on the ‘core 4’ roles, but with unique quirks, items, and backgrounds to fit the themes of HELLBLASTER, inspired by real characters who survived early playtests!
$4,500
+4 MORE PREGENS UNLOCKED!
Assemble a party of old-school proportions, rounding out the total to 8, including some advanced classes and demi-humans. Paladin? Barbarian? We'll send out a poll to see who joins to round out the squad.
$6,000
SOUNDTRACK UNLOCKED!
Music was a huge part of our inspirations, and HELLBLASTER is best played with an evil OST! Musicians need to earn a living, too. Hit this stretch goal, and we’ll commission a bespoke soundtrack (as digital download) by hand-picked industrial/ambient noise artists to provide some tasty jams while u blast. Artists are on standby - the length of the soundtrack will depend on how far beyond this stretch goal we reach.
HELLBLASTER: Against the Cyberfiends is part of OSE Month, a collection of all things demonic in Old-School Essentials. Back multiple campaigns for bonus rewards!
You can grab this exclusive bonus mini by backing this campaign and Crumbling Keep's Hell Unleashed - Demonic Wooden Minis for Old School Essentials! Find it here.
Old-School Essentials Month
Old-School Essentials Month is a group-collab project led by Exalted Funeral and Necrotic Gnome, featuring a new 176-page OSE book — the Demonic Grimoire — and sister projects from 16 other renowned creators in the OSE community.
The theme of OSE Month 2026 is: DEMONS! Get ready for hordes of new monsters, adventures set in the realms of hell, fiendish new character options, and lashings of blood-dripping art.
Group Achievements
We will be announcing a series of achievements tied to the success of all OSE Month projects jointly! To start with:
All projects funded: When all OSE Month projects fund, we will arrange a community Ask Me Anything session on Discord, featuring creators from across the projects. This will be a chance to chat with the OSE Month creators about their projects.
Old-School Essentials (OSE) is a role-playing game of fantastic adventure inspired by classic games of the 1970s and 1980s. Players delve into forsaken ruins, battle fearsome monsters, explore haunted forests and perilous mountain ranges, sail the high seas in search of lost lands, recover fabulous treasures, and unearth secrets of ancient magic.
