Sculken

Stop the spread. Own the depths. The Sculk rises. Will you?

Description

Ten days.
That’s how long the world stays quiet.

Strange pulses echo through caverns. Shadows linger in deep stone corridors. The ground itself seems to tense, as if waiting for something to break free. Every new world begins with an unseen countdown, and when the tenth sunrise comes, the Sculk infection will take hold.

Caves will grow more hostile and perilous to venture into.
Mobs become more aggressive and Sculk-infected; transforming into tainted mutations of their former selves.
The deepest layers of sculk will activate and the infection will spread relentlessly.

This world isn’t ending, it’s shifting.
And your goal isn’t simply to endure it.
Your goal is to push back, contain the spread, reclaim the world and cleanse the infection.

Survival is only the first phase.
What you build and prepare in those early days determines whether you can stand against what rises afterwards.

The Underground

The depths of the world are rebuilt into an expansive, interconnected ecosystem using several mods:

Caverns & Chasms: redesigned stone layers and geological activity that reacts to you, more hazards, and more resource variety
Galosphere: glowing mineral biomes and new underground creatures make the underground world feel alive and reactive even before the sculk infection begins to take hold
Spelunkery: geological formations, cave flora, new ore systems and overhauled mining progression
YUNG’s Better Caves & Cave Biomes: massive networks of caverns with new noise carvers and terrain features, flooded chambers and underground lakes of lava add complexity and variability to your spelunking!

These caves are the birthplace of the Sculk and later will be part of the battleground you’ll thrive on when fighting the infection head-on.

Combat Evolved

Enemies don’t just gain health, they gain tactics and intelligence.

Combat Circle gives mobs flanking behavior and spacing intelligence, groups and hordes of enemies become real threats to your escape and survival. Don't get surrounded!
Cloak & Dagger adds stealth mechanics as well as a new sound and light based mob-detection system to make subterfuge a real option
Project: Wardance makes combat tactical and skill based; study different combat disciplines and master several forms of martial arts along your journey!
Scorched Guns 2 arms you with modular firearms and scarce, craftable ammo while unleashing new mobs, dungeons, and threats built to test them; all this while being integrated into mods like Create for QoL

As the infection grows, familiar mobs twist into Sculk-tainted variants that fight with new patterns and behaviors. Difficulty only escalates as the world's threats escalate.

Progression Built Around Preparation

Technology in Sculkën isn’t about chaining together infinite automation, it’s about building reliable, rugged automation through technology that keep you alive when the Sculk starts spreading.
Every system is mechanical, diesel-smelling, hand-built, and purpose-driven.

Create

Rotational power, mechanical belts, boilers, mixers, pumps; all stitched together with ingenuity rather than scale. Create is the backbone of your workshop, letting you craft solutions and machines that matter when time is running out. It is integrated heavily throughout the pack and will play a large role in helping you gunsmith and establish ammunition production lines.

Immersive Engineering

Windmills clatter in the wind. Waterwheels churn. Diesel engines roar. IE provides grounded power generation, metalworking multiblocks, arc furnaces, crushers, conveyors, and the industrial grit you need for mid-game survival.

Immersive Machinery

Machines whose power matches their cost:

The Copperfin Submarine for abyssal exploration
The Tunnel Digger for carving safe routes through hostile terrain
Redstone Sheep for simple, compact farm automation
Bamboo Bee drones for moving items across a growing base

These are the sorts of contraptions explorers and scavengers would rely on.

Via Romana

Fast travel can be unlocked only after building real roads around the world, encouraging you to build actual infrastructure between you, your friends, and the world surrounding you. Connect outposts, mines, coastal ports, and Nether anchors as the world becomes more dangerous. Exploration will become safer because you built the infrastructure.

Bags of Holding

Simple, powerful, balanced inventory management without breaking the progression curve. Perfect for long expeditions into the depths of the overworld or far reaches of different dimensions.

Storage Drawers and Sophisticated Storage

Tons of bulk storage options that keeps your workshop organized when minerals, ammo components, and machine parts start piling up.

Braving the Seas

The ocean is no sanctuary. In Sculkën, the waters are as hostile, as mysterious, and as unforgiving as the land itself.

Aquamirae

Beneath the icy seas lies a maze of shipwrecks and abyssal creatures, where blizzards roll across the waves and ancient horns echo through drifting snow. The oceans freeze, fracture, and swallow explorers whole. This mod overhauls Frozen Oceans into worthwhile exploration destinations with new mobs, resources, dungeons, and bosses!

Whaleborne

The colossal Hullback Whale is no gentle giant at first glance. Covered in gunk and barnacles, it wanders the seas awaiting a captain. Clean it, earn its trust, and it becomes a living ship you can outfit with sails, anchors, cannons, storage, and sonar; a moving base built for the kinds of journeys no normal vessel survives.

No Shores of Safety

The seas aren’t an escape from the threats on land, they are their own battlegrounds. Aquamirae brings frozen labyrinths and abyssal horrors to the depths while Whaleborne gives you the means to navigate the seas. But be wary, do not forget the infection spreading at the heart of your world.

Thin Air = No Escape

Some survivors once believed they could slip past the infection by vanishing into other dimensions.
They imagined the Nether’s volcanic depths or the End’s silent void would shelter them from the Horde’s rise. But in this world, even the air refuses to offer refuge. Only the overworld still holds a breathable atmosphere.
Beyond it, the rules of survival are built upon the atmosphere itself.

Thin Air makes this truth unavoidable:

In the Nether, your oxygen drains slowly with every minute spent in its choking heat.
In the End, no air exists at all; only the void, refusing every unprepared breath.

Every expedition becomes a calculated risk. Every journey demands oxygen tanks, potions, respirators, air bladders, bottles of soul fire, and other engineered air supplies.

You cannot escape the Sculk by fleeing to other realms. If you want to survive beyond the overworld, you must carry your breath with you and return before it runs out.

De Profundis

The Nether isn’t a refuge from the Sculk. With Incendium it turns into a volcanic hellscape that’s just as lethal, unpredictable, and precarious as the overworld with its' sculk infestation.

Basalt towers rise like broken spines. Magma rivers slice through collapsed valleys. Sulfur and Ash clouds smother visibility, swallowing your sight without warning. Blackstone shelves hang over oceans of heat, ready to crumble beneath a careless step. But the danger isn’t only the terrain.

Incendium fills the Nether with hand-crafted dungeons and looming structures, all built from vanilla blocks and without breaking immersion:

Nether Reactors: Nuclear superstructures filled with ghastly hazards
Nether Pipes: winding industrial tunnels teeming with threats
Piglin Castles: sprawling strongholds with treasure, traps, and elite guards
All with new mob variants that feel like natural extensions of the vanilla Nether ecosystem while raising the stakes of survival

Each structure blends into the biomes around it, making the Nether feel ancient, engineered, and deeply dangerous. Every step forces awareness. Every fight becomes a battle for space, elevation, and survival. And with the Sculk spreading in the overworld, the Nether becomes another front where escape isn’t an option.

The End... or is it?

The End becomes an alien world of impossible geometry and alien silence. Nullscape overhauls the void into a realm of titanic obsidian continents, gravity-torn cliffs, and suspended landmasses that stretch beyond sight, as if carved by forces unknowably powerful. Enlightend deepens the strangeness: far above the islands, the Upper End manifests as a drifting belt of noble-gas planets, floating dust fields, and inverted-gravity biomes where physics bends and new technologies become possible: xenon reflectors, helium engines, lasers, inverted sand, and mobility tools that feel more eldritch than mechanical. Far below, the Enderneath grows downward into a radioactive overgrowth lit by irradium veins, cerulean stalk forests, and vicious Stalkers capable of knocking explorers straight into the void if they aren't careful.

Between these layers lie surreal ecosystems: ennegel groves that bounce like living rubber, ooze basins that warp teleportation, gaseous gardens with drifting monoliths, and the glacial Arctic Abyss, where dead leviathans corpses drift through the void. Each biome hides rare materials, strange crops, dangerous effects, and technologies that blur the line between magic, radiation, and cosmic engineering.

Ruins from Enlightend, Scorched Guns, and Moog’s End Structures scatter the dimension: crystalline altars, offering statues that demand tribute, alien generators, forgotten towers, and hazard-filled laboratories that hint at a civilization that reached too close to higher power.

The Ender Dragon is re-made into a true alien predator: the Ender Trigon. It is armed it with three heads, new attack phases, minion dragons, terrain-spiking dives, and snatch-and-drop assaults; all while the fight is customized to have scaling difficulty, lightning storms, debuff-triggering crystals, anti-cheese mechanics, and mob waves that turn the fight into a formidable final encounter.

The Sculk Threat

The tenth sunrise doesn’t start the apocalypse. It starts the counterattack.

Once awakened, the infection doesn’t simply spread; it strategizes. Veins of the sculk horde's infestation spread across the world's surface; reshaping terrain and environments as it grows in strength, all while consuming blocks and mobs in its' wake. The world stops feeling passive, forcing you to do the same.

You’ll see zones of sculk infection forming in caves and on the surface, hear the shift of distant movement as you explore the depths, notice familiar routes growing unsafe. Progression becomes a race against an enemy that constantly reshape your world and twist its inhabitants into agents of the hive mind.

But this isn’t a hopeless fight. Every expansion has a pattern. Every mutation has a weakness.Every outbreak can be traced back to its' source.

Your task isn’t to hide from the Sculk; it’s to study it, hunt it, and strike back where it’s strongest.

The infection escalates and so must you.

Why Sculkën?

Because the world isn’t just full of threats, it’s full of opportunities to beat them and save your world.

Exploration with tension and purpose
Combat that rewards smart positioning and raw skills over simple stats
Tech paths that support preparation, not overpowered shortcuts
Caves, Oceans, Nether, and an End that matter as much as the overworld
An evolving world that forces adaptation without forcing you into a certain role, you choose how you fight the Sculk Horde
An infection that can be fought, contained, and eventually conquered with tools and tech that aids you along the way

This is survival with direction. A hostile world with rules you can learn. And a countdown that turns preparation into momentum instead of panic.

You’re not running from the Sculk. You’re gathering the strength to meet it on your own terms and end the infection where it began.

Ten days to prepare.
A whole world to reclaim.

Need help, found a bug, or want to discuss strategies?
Join the Blockbastus Labs Discord and be part of the community shaping the pack.

This modpack is largely feature complete; quests will be added in future updates along with potential additional custom features but largely this pack should be considered an expert pack. You will not be handheld on what to do at any given point, you are in charge of your adventure. You must use JEI/EMI and have a basic understanding of how to explore mods through exploration and experimentation. Feel free to join the Discord with questions if you need help, our community is happy to discuss and talk through different mods and aspects of the pack with you!