Cerulean Seas Campaign Setting Second Edition

A Focused Dive Into the Depths

After fifteen years, the groundbreaking underwater campaign setting returns—reimagined for Pathfinder Second Edition. Cerulean Seas transformed tabletop gaming by making underwater adventuring not just possible, but intuitive and exciting. Our ENnie Award-nominated setting opened a vast new frontier for roleplaying adventures, and now it's time to bring this beloved aquatic world into a new era.

Core Rulebook First: A Strategic Approach

Learning from our previous experiences, we're taking a more focused approach. This campaign funds the creation of the essential Cerulean Seas Core Rulebook for Pathfinder Second Edition—the fundamental foundation that makes underwater adventuring possible. By concentrating our efforts on perfecting this cornerstone product first, we can ensure its quality, playability, and success before expanding to additional sourcebooks.

The Essential Underwater Experience

The Core Rulebook contains everything players and GMs need for complete underwater campaigns:

• Comprehensive rules for underwater adventuring in Pathfinder 2E
• The key aquatic ancestries that define the Cerulean Seas experience
• Specialized backgrounds and archetypes for underwater adventuring
• Equipment, magic items, and spells designed for aquatic environments
• Our signature 3D combat system, elegantly integrated with Pathfinder 2E's dynamic three-action economy
• A bestiary of the most essential underwater creatures
• The core setting information for the Cerulean Seas world

Built for Pathfinder Second Edition

Pathfinder 2E's mechanics are remarkably well-suited for underwater adventuring. The ancestry system allows us to reimagine our aquatic peoples with rich customization options. The balanced class design ensures that all character concepts remain viable beneath the waves, while the streamlined rules make diving into underwater adventures more accessible than ever.

Special Add-on: Deluxe Tracker Trees

Watch this video to learn more about this amazing Add-on!

Stretch Goals: Bringing Back Beloved Expansions

While our focus is on delivering an exceptional Core Rulebook, our stretch goals aim to begin the process of bringing back fan-favorite expansions. Reaching our funding targets will allow us to develop conversion guides and new content for:

• Waves of Thought: Psionic options for underwater campaigns
• Azure Abyss: The terrifying secrets of the ocean depths
• Indigo Ice: Adventures beneath the frozen seas

Each stretch goal will expand the Cerulean Seas experience and lay the groundwork for full expansions as the line grows.

Why We Need Your Support

Creating a high-quality core rulebook requires significant resources:

• Professional editing and layout design
• Artwork that captures the wonder of underwater environments
• Extensive playtesting and mechanical refinement
• Print production and distribution
• Digital asset creation for VTTs

One Book, Endless Possibilities

Whether you're a veteran of our first edition or new to underwater adventuring, the Cerulean Seas Core Rulebook opens the door to a vast, unexplored realm of adventure. This isn't just another setting—it's an entirely new dimension of play that expands what's possible in your Pathfinder campaigns.

The sea is calling. This time, will you answer?