✦ Worldbuilding for stories, campaigns, and roleplay

Build Living Fantasy Worlds—Everything Connected

Create and connect characters, locations, lore, items, and art inside one evolving universe. Build solo or bring co-authors, campaign groups, and friends along for the journey.

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Free to start · Build solo or together

The Thornreach world page in the Summon Worlds app

Your world, your way

One worldbuilding home, four ways to create

Build a setting for a novel, campaign, character, or the pure joy of seeing what has been living in your head.

For worldbuilders

Turn scattered ideas into a universe

Connect every person, place, object, culture, system, and event so your setting can grow without becoming impossible to manage.

Explore the worldbuilder path

Turn scattered ideas into a universe product preview

Central World

Your World

One connected home for everything you create.

Characters

People with histories, motives, abilities, and relationships.

About Summon Worlds

A home for every part of your world

Summon Worlds is a worldbuilding app for creating and connecting fantasy characters, locations, lore, equipment, artwork, and roleplay inside one evolving universe.

Keep characters, locations, equipment, and lore connected.
Build privately on your own or see collaborators shape the same shared universe.
Turn a creative spark into art, story, and roleplay.

Start building your world

Made in Summon Worlds

Give every part of your world a visual identity

Create visual references for characters, creatures, places, and artifacts so your setting feels recognizable to everyone exploring it.

A luminous purple-winged fairy in a moonlit fantasy world

A crystalline ice dragon created for a fantasy story

A magical cat character wearing ornate fantasy clothing

A wizard summoning a glowing orb inside an icy cavern

A dreamy robot character created with Summon Worlds

500K+
Global downloads: 10K+
Unique worlds: 100K+
Character chats: 30K+
Characters ready to meet

Worldbuilding in your hands

Go from a creative spark to a living world

Start anywhere, connect what you create, and keep discovering where your world can lead.

Create a world screen in the Summon Worlds mobile app

More than disconnected ideas

Build worlds that feel alive

A connected creative toolkit for the moment inspiration arrives—and for every relationship and story that grows afterward.

Keep every creation in context

Give every character a home, every item a history, and every idea a meaningful place in the world.

Make your world recognizable

Give characters, creatures, places, and artifacts visual references that feel at home in your setting.

Meet the people inside your world

Use in-character conversation to reveal motives, memories, relationships, and unexpected plot possibilities.

Your universe, connected

Summon every part of your story

Build a coherent world from the grandest kingdom to the smallest enchanted artifact.

Characters

Armor

Weapons

Spells

Items

Locations

Community spotlight

Explore worlds brought to life by the community

See what storytellers, game masters, writers, and artists are creating together in Summon Worlds.

Discover all community worlds →

Baileythorn

Mesao

Mesao stands as a colossal terrestrial world, dwarfing even the great gas giant Jupiter by threefold in sheer mass, yet maintaining an Earth-like composition and climate that sustains diverse forms of life. The planet orbits within a system graced by twin suns whose combined radiance bathes the world in perpetual magical luminescence, creating auroras and prismatic phenomena across its skies. Four moons of varying sizes circle Mesao in intricate celestial patterns, their gravitational influences creating tidal phenomena of extraordinary magnitude across vast oceans and inland seas. The very fabric of reality thrums with arcane energy, infusing the atmosphere and soil with potent magical essence that shapes all living creatures within this realm. Magnificent beasts of fantastic origin roam Mesao's sprawling continents and deep wilderness areas—creatures born from and sustained by the abundant magical forces that permeate every corner of the world. From soaring draconic entities to shapeshifting horrors lurking in enchanted forests, the fauna of Mesao represents some of the most wondrous and perilous manifestations of magic given flesh. This extraordinary world serves as a nexus of supernatural power, where the boundaries between the natural and magical blur into a harmonious, if dangerous, existence.

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Lord_Alvaro

The Nexus Card Works

Deep within a sprawling, climate-controlled industrial complex, The Nexus Card Works operates as a cathedral of creation where imagination is forged into tangible form. Colossal printing presses thunder with rhythmic precision, transforming enormous rolls of premium black-core cardstock into sheets adorned with breathtaking artwork—dragons mid-flight, wizards channeling arcane power, and legendary creatures rendered in stunning detail. Specialized chambers throughout the facility apply shimmering holographic laminates and intricate foil stampings, imbuing each card with an otherworldly luminescence that catches light like genuine magical artifacts. The air itself seems charged with creative energy, tinged with ozone and the faint scent of specialized inks as ultra-precise cutting dies punch out millions of cards daily with microscopic accuracy. From classic collectibles to cutting-edge releases, every card that emerges from these production lines bears the mark of masterful craftsmanship and technical excellence. This monumental factory stands as the vital engine driving the global passion for strategic card games and collectible gaming, where raw materials are elevated into treasured pieces that inspire wonder and adventure in collectors and players across the world.

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Nullzero

The Aether Expanse

The Aether Expanse is a boundless realm of wonders where reality itself has been fragmented into countless islands of existence. Massive continents of stone and earth drift eternally through an infinite ocean of raw magical energy, accompanied by the remnants of shattered celestial bodies and the mysterious constructs of civilizations long lost to time. These floating landmasses range from verdant paradises teeming with life to barren wastelands scarred by ancient cataclysms, each suspended in the luminous void by forces beyond mortal comprehension. Rather than traditional vessels bound to material seas, adventurers and merchants traverse this realm aboard arcane ships that harness the swirling currents of magical essence flowing through the Aether itself. These vessels ride the invisible tides of pure magical force, allowing brave explorers to chart courses between distant islands and uncover the secrets of forgotten worlds. The boundaries between the known and unknown blur in this realm, where every horizon promises discovery and danger in equal measure. Those who dare to sail the Aether's currents may find themselves among the stars one moment and lost in ancient ruins the next, forever changed by what they encounter in this

steampunk,
arcane

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Fantasy author portrait representing a Summon Worlds creator story

“Summon Worlds creates characters through simplicity. It keeps every idea in its appropriate setting and adds depth to the lore and creativity in my writing.”

Dane Watson — “ValithreX”· Fantasy author

Learn, plan, and create