Coriolis

Embark on a spacefaring adventure in Coriolis, a sci-fi tabletop RPG set in a universe of ancient mysteries and interstellar conflict. Players navigate political intrigue and cosmic dangers aboard a living spaceship, utilizing unique mechanics like the iconic Symmetry Point to shape the narrative and create unforgettable stories in the vastness of space.

At-a-glance

Science Fiction • Needs GM • 4/5 complexity • Medium prep

Coriolis

Coriolis is a science fiction tabletop roleplaying game set in the isolated Third Horizon, blending Arabian Nights aesthetics with interstellar exploration and political intrigue. Using the Year Zero Engine, it focuses on character customization, resource management (particularly ship-related costs), and tactical combat, offering a unique experience for players interested in exploration-driven gameplay and a rich, lore-heavy setting.

Theme and Setting

Coriolis is set in the Third Horizon, a remote cluster of star systems isolated from the rest of humanity after the Portal Wars. This setting is a melting pot of cultures, where the First Come colonists, worshipping the Icons, coexist with the newly arrived Zenithians, who pursue an imperialistic agenda.

How Play Feels

The game masterfully blends science fiction with Arabian Nights themes, creating a unique and evocative atmosphere. The central hub of the Third Horizon is the space station Coriolis, a beacon of trade, politics, and intrigue built from the remnants of the arkship Zenith.

What Makes It Distinct

Players navigate this complex environment, encountering ancient ruins, powerful factions, and mysterious beings from the Dark Between the Stars, becoming entangled in political conflicts and shaping the destiny of the Horizon. The lore establishes a detailed backdrop, full of adventure possibilities across its thirty-six star systems, each location providing unique encounters and challenges.

Where It May Not Fit

You want a very light rules load You want combat and action to drive most of the session.

Decision guide

What this game is about

Key facts
Players
2-5 players + GM
Session
120-240 minutes
Prep
Medium
Play profile
Complexity
4/5
New GM Fit
2/5
Roleplay Focus
5/5
Combat Focus
2/5
Tactical Depth
2/5
Campaign Depth
5/5
Who it suits
Best for
Players who want science-fiction ideas to shape the actual play experienceGroups that want place, travel, and discovery to stay centralPlayers who want character, atmosphere, or story to matter more than pure tactics
Avoid if
You want a very light rules loadYou want combat and action to drive most of the sessionYou mainly want short standalone sessions with minimal carryover

A strong fit for groups that want science-fiction ideas to shape the actual play experience, with exploration-Driven helping define the experience.

Agent data

Structured data and an explicit decision profile JSON document are available for remote agents.

Open agent JSON