A stone colossus erupts from a cloud of dust before five adventurers, torch raised (Vestiges, the Sylkaen RPG)
The Monstrous Bestiary · 173 pages

Something is rising
from the Deaf Layers

Fifty creatures that exist in no other bestiary, from level 1 to level 20. Each one is presented twice: a page of out-of-combat lore, then its ready-to-play stat block.

The Monstrous Bestiary for Vestiges, the Sylkaen RPG: cover
173
pages
50
original creatures
3
origin families
20
levels covered
2
pages per creature
2
editions included

From CR 1/8 to CR 20, enough to populate a whole campaign. 5e and 3.5 editions included, in the Complete Bundle.

A digger's first reflex before an unknown creature is not to draw. It is to wonder which Cycle it came out of.
Opening of the Monstrous Bestiary
Three encounters

What waits for you down there

Three creatures from the book, in motion. None of them behaves like a dungeon monster: each one wants something, and it is not always your death.

An apparition leaning over a man seated in a ruined hall (Vestiges, the Sylkaen RPG)

What remembers

It has seen you before. You have not seen it.

An immense eye open in a stone wall at the bottom of a chasm (Vestiges, the Sylkaen RPG)

What watches

The shaft was never a shaft.

Phosphorescent moss carpeting a cavern floor, two lanterns in the distance (Vestiges, the Sylkaen RPG)

What grows

Green, warm, and paying attention.

Three origins

Sorted by nature,
never by ferocity

In Sylkaen, what a creature is matters more than how dangerous it is. The book is split into three families, and each one is met differently.

The Sediments

The vast majority

Beasts, mechanisms and non-living Vestiges brought up from the physical world, tier after tier, from the Foundations down to the Bottomless. They follow a logic of depth.

The Strata

Rare leaks from the Cosmos

Silence, Time, Possibilities, Memories, Metamorphoses. They obey no depth but the law of their own Stratum, and surface wherever a Door or a Scar opens.

The Living Vestiges

Forgotten ecosystems

Organisms that keep existing by the rules of a vanished Cycle, indifferent to the present world. Less opponents than ecosystems that refuse to die.

One entry, two uses

You read the first page.
You keep the second one open.

The Living Memory Echo, creature of the Strata of Memories, Monstrous Bestiary of Vestiges, the Sylkaen RPG

The lore page

Habitat, origin, ecology, habits, history. What the world knows about the creature, and what it keeps quiet. To read before the session, to understand what you are facing.

The stat block

AC, hit points, ability scores, CR, following SRD 5.2.1 conventions, plus table advice. To keep open when the dice come out.

Every creature comes from somewhere

Its anchor, a Sediment tier, a Cycle, a Stratum, is not decorative: it tells you where you meet it and what its presence means. Burrowers fleeing a mound are information before they are an encounter.

Combat is not always the answer

Many Vestige creatures follow a rule: an instruction, a rhythm, a sentence to finish. Working it out is worth the victory, and the book asks you to award the same experience to the party that figured it out.

A glimpse

Seven of them

Leviathan of the Mists, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
Leviathan of the Mists
The Eye of the Bedrock, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
The Eye of the Bedrock
The Last Builder, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
The Last Builder
The Larva-Empress of the Foundations, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
The Larva-Empress
The Rusted Titan of the Ruin Bed, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
The Rusted Titan
The Fossil Throne, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
The Fossil Throne
Devourer of Cycles, creature from the Monstrous Bestiary of Sylkaen (Vestiges RPG)
Devourer of Cycles
???43 more to discover

Frequently asked questions about the Bestiary

What does a creature entry contain?

Every creature has a complete two-part entry: a page of out-of-combat lore (habitat, origin, ecology, habits, history) and a ready-to-play stat block following SRD 5.2.1 conventions, with its table advice. Nothing to convert, nothing to improvise: the entry goes straight to the table as it is.

How many creatures, and for which levels?

Fifty original creatures, from level 1 to level 20 (challenge rating, or CR, from 1/8 to 20), enough to populate a whole campaign without ever recycling a generic monster. They fall into three families by origin: the Sediments, the Strata and the Living Vestiges.

Why is the book not sorted by danger level?

Because in Sylkaen, what a creature is matters more than how fierce it is. A creature's anchor, a Sediment tier, a Cycle, a Stratum, tells you where you meet it, how it behaves and what its presence means. Burrowers fleeing a mound are information before they are an encounter.

Do I have to choose a rules edition?

No. The Complete Bundle includes both rules editions of the Bestiary, so you play with the one that matches your table, with no conversion needed.

Can I buy the Bestiary on its own?

No. The Monstrous Bestiary is part of the Complete Bundle with the Player's Book and the Game Master's Book, for €19.99. That is the only way to get it, and the Bundle includes both rules editions of all three books.