Location 1
Pax Path Rise
Connected to Realm Of Ancaria
Summon Worlds mobile app
A worldbuilding app for the world you can’t stop thinking about
Keep your Characters, Locations, lore, visuals, and strange little details inside one connected universe. Start with one idea on your phone. Build it privately, explore it through roleplay, or invite people in when you’re ready.
Free to start · Available on iOS and Android · Build solo or together
Built for the way you create
Made for worldbuilders.
Not everyone begins with a map. You might start with a Character, a scene, a campaign problem, or a name that sounds too good to waste. Pick your way in. The rest of the World can grow around it.
Give every idea somewhere to belong
Connect cultures, cities, factions, Characters, artifacts, systems, and historical grudges inside one universe that can keep expanding.
See how worldbuilders use Summon Worlds →Your ideas, without the tab chaos
Your ideas don’t arrive in order. Your World still can.
A Character may show up before their kingdom. A cursed ring may appear before the war that made it matter.
You might invent a tavern, forget it for six months, then suddenly realize it is where the entire story begins.
That is normal. Start wherever inspiration starts, then connect the pieces when the bigger picture comes into view.
silver-eyed princeruined cityThe Glass WarCharacter portraitweapon cardhalf-written plot note
Character
→ lives in a Location
→ belongs to a faction
→ carries an artifact
→ remembers an event
→ has a reason to hate someone
Worldbuilding that moves with you
Catch the idea before it disappears
Open the app when a name, place, Character, or plot twist hits. Save the rough version now. Give it depth when you have time.
At 1:14 a.m.
When the magic system suddenly makes sense.
Between campaign sessions
When you remember what the suspicious innkeeper was hiding.
Somewhere you were definitely meant to be doing something else
When one Character idea becomes an entire dynasty.
One World, real connections
Every detail knows where it belongs
Characters live somewhere. Weapons have owners. Locations carry history. Memories change how people speak. Summon Worlds keeps those relationships visible.
Example World
Realm Of Ancaria
Location 2
Harrington
Connected to Realm Of Ancaria
Location 3
Ancaria
Connected to Realm Of Ancaria
Your canon, your call
Use a little help. Keep complete control.
Start from scratch when you know what you want. Use assisted creation when the blank field is staring back. Then edit, replace, keep the useful part, or throw the suggestion out.
Manual creation
Write it yourself
Start with your own name, description, history, and rules.
Assisted starting point
Get unstuck, then take over
Use optional assistance for a starting point when the blank field pushes back.
Same editable result
Edit everything
Refine the name, description, history, rules, and artwork until the Character actually feels like yours.
Location: Nightfall FieldsWeapon: Penumbral HarpoonRival: Seraphine ValeMemory: The SiegeFaction: The Ashen Guard
The harpoon was never meant to survive the Siege.
Then why do you still carry it?
Characters with context
Your Characters remember where they come from
Talk with a Character using the World around them—not a blank chat with a familiar face pasted on top. Their memories, relationships, equipment, and setting give the conversation somewhere to come from.
Explore Character roleplay →Share when you’re ready
Build quietly. Open the gates later.
Keep your World private while it is still fragile. Invite a co-author or campaign group when collaboration would make it better. Publish it when you are ready for other people to explore.
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Battle Rages · Private
Just you and the World taking shape.
Owner view · Only you can explore and edit this World.
Big Worlds. Tiny details.
Start with the kingdom. Or the cursed spoon.
Build the part that is already clear. The rest can grow around it.
Worlds
Characters
Locations
Weapons
Armor
Items
Spells
Artwork
Character Roleplay
Community spotlight
Explore worlds brought to life by the community
See what storytellers, game masters, writers, and artists are creating together in Summon Worlds.
Enders_CaveRealm Of Ancaria
The realm of Ancaria is a captivating world filled with natural wonders. Lush forests, towering mountains, and rolling hills create a breathtaking landscape, while a sparkling sea with a stunning dark beach adds to the enchanting beauty. This land is ruled by the beloved and just King Nathaniel, who has dedicated his reign to uniting all people and fostering peace, mercy, and kindness. The inhabitants of Ancaria are kind and courageous, embodying the spirit of their benevolent king and working diligently to preserve the natural splendor that surrounds them. The culture of this realm is rich and diverse, with each village boasting its own unique traditions and customs, yet all are bound by their shared devotion to their king and their commitment to living in harmony. Ancaria is also home to magnificent rock formations that inspire awe and serve as a testament to the strength and resilience of its people.
- Knights
- Fantasy
Streicher
The Old Guardian
An immense oak tree of legendary proportions rises nearly nine hundred meters skyward, its colossal trunk stretching three hundred meters across, crowned by branches that sweep outward in a magnificent canopy spanning eight hundred meters in radius. Countless civilizations and beings across the ages speak of this ancient sentinel as an eternal fixture of creation itself, a witness to the world's very genesis. Its verdant crown remains pristine and unblemished, free from decay or disease, while its massive trunk and sprawling root network show no sign of rot, decay, or parasitic corruption—a testament maintained by the countless creatures who make their homes within its shelter and contribute to its perpetual vitality. Throughout recorded history, The Old Guardian has endured apocalyptic tempests, devastating hurricanes, catastrophic floods, and raging infernos, each time emerging from destruction with scarcely a mark upon its ancient wood. Those fortunate enough to encounter this towering colossus often experience an uncanny sensation of being perceived by an intelligent, watchful presence—a gaze both vigilant and strangely benevolent, though no visible observer can ever be found. Despite this mysterious guardianship, no being of any race, nature, or origin—mortal or divine, beast or dragon, good or evil—has ever succeeded in bringing harm to its sacred form, as though some fundamental force shields it from malevolent intent.
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Matthew1001Spirit Realm
The Spirit Realm is a plane of existence that exists parallel to the material world, accessible only through powerful magic or divine intervention. This ethereal dimension is inhabited by incorporeal entities, celestial beings, and the restless souls of those who have passed beyond the veil of mortality. The landscape shifts between crystalline spires of pure magical energy and vast expanses of luminescent mist, where time flows in unpredictable patterns. Adventurers who venture into this realm often find themselves tested by spectral guardians and ancient spirits who jealously guard forgotten knowledge and enchanted artifacts. The boundaries between thought and reality blur within the Spirit Realm, allowing those attuned to its nature to perceive visions of possible futures and hidden truths. Powerful warlocks, clerics, and wizards seek communion with this plane to gain otherworldly power, though the price for such knowledge is often steep. Few mortals return from extended stays in the Spirit Realm unchanged, bearing marks both visible and invisible from their encounters with forces beyond mortal comprehension.
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Not sure where to start?
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Follow a guided path, grab a template, or use a free tool to make the next decision a little easier.
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Explore all worldbuilding resources →Learn Worldbuilding
Follow the journey from first premise to connected fantasy World.
☷Use the Worldbuilding Template
Give your people, places, cultures, systems, and conflicts a useful structure.
✦Try Free Worldbuilding Tools
Create names, backstories, NPCs, creatures, and the next piece of your setting.
A few things people usually ask
Worldbuilding app questions
A notes app can store information. Summon Worlds keeps the relationships between that information visible. A Character can belong to a Location, carry equipment, remember an event, and exist inside a wider World instead of sitting alone in a document.
Start with the part you already have
One Character is enough
You do not need the map, timeline, magic system, and twelve dynasties figured out. Start with the idea that is already alive. The rest of the World can grow around it.
Free to start · Available on iOS and Android