[ SYSTEM: DUNGEON CORE AWAKENED · DAY 1 ]

THE
AMBER
BEAST

A Dark Dungeon Core LitRPG

In the dark beneath a limestone hill, something opened its eyes. It does not mourn. It does not feel. It only learns — from flesh, from failure, and from the screaming things it catches in its silk.

EXCLUSIVE — NOT IN THE BOOK

He Found What
Thaddeus Buried.

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[ MANA ABSORBED: +4 · EXP: +0 ]
The Amber Beast — A Dark Dungeon Core LitRPG by Mathis Thorne
// Book One of The Amber Beast

Welcome to
the Dungeon.

Kale wakes alone in stone and dark. No memory. No name — until the System gives him one. He is a Dungeon Core: inhuman by definition, curious by nature, and entirely without empathy as humans understand it.

He begins the only way he knows how — by learning. By touching, measuring, mapping. By taking apart the things that wander into his domain, and putting them back together, changed.

When a party of adventurers falls into his dungeon, Kale doesn't see prey. He sees specimens. But one of them — wounded, loud, and infuriatingly persistent — refuses to behave like a controlled variable.

A dark fantasy LitRPG with gritty survival mechanics, dungeon building, system progression, and an inhuman protagonist learning what it means to want something other than mana. Features a slow-burn MM romance subplot across the series.

[STATUS: Wounded, Trapped | LVL: 1 | EXP: 0/10 | MANA: 9/10]
[CORE: Dungeon Core — Kale. Day 1 since Awakening.]
[GENRE: Dark Fantasy · LitRPG · Dungeon Core · Monster Evolution · Body Horror · Slow-Burn MM]
⚠ CONTENT WARNING — Graphic violence · clinical anatomy · body horror · captivity & psychological distress · non-consensual experimentation · intense survival situations. This edition is rated 16+. Extended +18 versions of select scenes available via Patreon.
[ STATUS: ACTIVE · ACCEPTING READERS ]
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// Prologue

The silk wasn't
just holding him.

Each pull ripped more skin from Corvin's shoulders, but he couldn't stop. Raw, choking panic hammered against his ribs. He was nineteen years old, hanging in the dark, and he was going to be eaten.

Thirty meters down, the nightmare forest glowed. Sickly blue-white caps cast long shadows. The air tasted like rotting meat and copper. Around him in the canopy, giant spiders clicked and shifted.

A figure strolled out of the glowing mushrooms. It had the shape of a young man, but the movement was wrong. Too smooth. Too unbothered. Pale skin, uneven silver hair, and a heavy, dead-white tail swaying behind it. And its eyes — bright amber, burning in the dark. It wasn't a person. It was the dungeon itself, wearing a skin.

— THE AMBER BEAST · Prologue
// Exclusive Content

Go Deeper.

The published edition is 16+. The dungeon has more. Extended scenes, alternate POVs, and +18 content — everything the main edition leaves in the dark.

$3
Supporter
Your name on the list of people who made this happen. No extras, no obligations.
$7
Beast Lover
2 exclusive short stories per month set in the Amber Beast universe. Canon-adjacent. Written only for patrons.
$15
Obsessed
Everything above + 2 additional stories per month. Darker, explicit, no fade to black. This is the +18 tier.
$25
Feral Council
Everything above + vote on what gets written next, ask questions about lore, see ideas before anyone else. Limited to 15 members.
$50
Named in the Dungeon
Everything above + your name enters the canon permanently. Cover reveals and announcements reach you first. Limited to 5 members.
$100
Dungeon Commission
One slot per month. You send the elements, I write an exclusive story for all patrons — dedicated to you. 1 slot only.
Join on Patreon
4 MEMBERS JOINED  ·  21 LIMITED SPOTS REMAINING

The +18 content lives on Patreon. The lore lives everywhere.

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// The Author

Mathis Thorne

I write dark fantasy with teeth — LitRPG systems, morally complex monsters, and relationships that take their time getting somewhere dangerous.

The Amber Beast is the first book in a series that has been living rent-free in my head for long enough. Kale is my favourite kind of character: wrong in ways that are genuinely interesting, slowly becoming something I didn't plan.

The +18 content lives on Patreon. The lore lives everywhere.

Still here? Good.
The dungeon rewards persistence.

Get "Closed Doors" — a free exclusive story you won't find anywhere else.

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