Monster Books RPG Bestiaries - Tome of Horrors & Creature Collections - Open Gaming Store

Comprehensive Monster & Creature Sourcebooks for Tabletop RPGs

Discover the ultimate collection of monster books, bestiaries, and creature compendiums for your tabletop RPG campaigns. From classic fantasy beasts to exotic encounters and psionic horrors, our Monster Books collection brings Game Masters an unparalleled arsenal of adversaries, allies, and otherworldly beings to populate their worlds.

Essential Bestiaries & Creature Collections

Build your monster library with comprehensive sourcebooks like The Tome of Horrors Complete, the definitive bestiary featuring hundreds of creatures for Pathfinder campaigns. Expand your options with Fifth Edition Foes for 5E games, or explore the Psionic Bestiary for mind-bending psychic creatures.

For GMs seeking variety, Book of Monster Templates and 101 Not So Simple Monster Templates provide frameworks to customize and enhance any creature in your campaign.

Specialized Monster Sourcebooks by Type

Shadow & Planar Creatures: Explore darkness with Book of Beasts: Monsters of the Shadow Plane and Dark Fey for sinister fey encounters.

Exotic Encounters & Unique Creatures

Campaign Setting Monster Books

Monster-Focused Bundles & Value Collections

Supporting Resources

Whether you're running Pathfinder, D&D 5E, or other d20 systems, our Monster Books collection provides the creatures, templates, and inspiration to challenge your players and bring your world to life.

Pathfinder (P2): Lost Omens - Monsters of Myth

Pathfinder (P2): Lost Omens - Monsters of Myth

Regular price $34.99 USD

Regular price Sale price $34.99 USD
Pathfinder (P2): Bestiary 2

Pathfinder (P2): Bestiary 2

Regular price $45.00 USD

Regular price Sale price $45.00 USD
50 Kobold Encounters

50 Kobold Encounters

Regular price $3.95 USD

Regular price Sale price $3.95 USD
The Dragon's Hoard #4

The Dragon's Hoard #4

Regular price $5.99 USD

Regular price Sale price $5.99 USD
Aigyptos: A Gazetteer for 5th Edition

Aigyptos: A Gazetteer for 5th Edition

Regular price $4.99 USD

Regular price Sale price $4.99 USD
The Kobold Lair (An Encounter Area for 5th Edition)

The Kobold Lair (An Encounter Area for 5th Edition)

Regular price $2.99 USD

Regular price Sale price $2.99 USD
Men & Monsters of Ethiopia (An RPG Sourcebook for 5th Edition)

Men & Monsters of Ethiopia (An RPG Sourcebook for 5th Edition)

Regular price $4.99 USD

Regular price Sale price $4.99 USD
Earth Pig (A Monster for D&D 5E)

Earth Pig (A Monster for D&D 5E)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
Jinshu Shu, the Metal Rat (A Monster for D&D 5E)

Jinshu Shu, the Metal Rat (A Monster for D&D 5E)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
Fire Rooster (A Monster for D&D 5E)

Fire Rooster (A Monster for D&D 5E)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
Earth Dog (A Monster for D&D 5E)

Earth Dog (A Monster for D&D 5E)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
Brown Dragon (A Monster for 5th Edition)

Brown Dragon (A Monster for 5th Edition)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
Krampus (A Monster for 5th Edition)

Krampus (A Monster for 5th Edition)

Regular price $0.99 USD

Regular price Sale price $0.99 USD
A Brief History of Gnolls: Anthropophagy & Emeralds from Wales to Wisconsin & Beyond

A Brief History of Gnolls: Anthropophagy & Emeralds from Wales to Wisconsin & Beyond

Regular price $2.99 USD

Regular price Sale price $2.99 USD
Pathfinder 1e: Bestiary 4 (Hard Cover)

Pathfinder 1e: Bestiary 4 (Hard Cover)

Regular price $39.99 USD

Regular price Sale price $39.99 USD
Mystical: Kingdom of Monsters Anniversary Edition

Mystical: Kingdom of Monsters Anniversary Edition

Regular price $15.00 USD

Regular price Sale price $15.00 USD

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Comprehensive Monster & Creature Sourcebooks for Tabletop RPGs

Essential Bestiaries & Creature Collections

Specialized Monster Sourcebooks by Type

Exotic Encounters & Unique Creatures

Campaign Setting Monster Books

Monster-Focused Bundles & Value Collections

Supporting Resources

Collection: Monster Books

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