An atlas of
impossible places.
Discover realms defined by a single impossible truth.
Wander. Question. Enjoy.
Enter the Atlas →
FEATURED WORLD
樓上城
你的童年，還在施工
石門市裡，每逢門牌能被五整除的住宅樓，頂層走廊盡頭連著的，正是這座城二十年前的自己——而二十年前的石門，正在大興：塔吊排到天邊，滿街馬賽克瓷磚與金色鏡面玻璃，卡拉OK唱到四點，樓盤的紅底白字許諾這裡將是天底下最富的一座城。你在樓上做的任何事都改不了已經發生的事。你只能在裡面買東西、在裡面哭一場，然後回家。
走進這個世界 →THE ATLAS
No worlds match that search.
A WORLD YOU CAN PLAY
When the Fog Lifts A gentle companion for anyone hurting and a bit lost in love: say what happened and get one small step for tonight, calm down with three slow games, or take the journey from a foggy harbour to the last ferry. Written for Aotearoa New Zealand. Play →THE RULE
One hinge
Each world is allowed exactly one impossible fact — with hard, written limits.
Pure consequence
Laws, trades and customs all exist because of something. Nothing is decoration.
Ask it anything
Question any world's Lorekeeper — the answer stays in canon, or extends it by cause and effect.
STAY IN THE LOOP
New worlds, stories and updates from the Atlas.
QUESTIONS
What is 99 Worlds?
An atlas of ninety-nine invented worlds. Each turns on a single impossible fact, and everything else — its laws, its prices, its customs and its taboos — follows from that one fact by cause and effect. This is original fiction, not reference material.
Are these worlds published anywhere else?
No. They are written for this atlas and exist nowhere else. Every world, every law and every price you read here lives only here.
How should I explore it?
Start with today's world, or simply wander the Atlas. Each dossier reads straight through, but it also rewards dipping in — the laws and the price list will often tell you where you are faster than the opening paragraph does.
Can I ask a world questions?
Yes. Every world has a Lorekeeper who answers from inside it — how a trial works, what dinner costs, what happens to someone who breaks the rules. Where the dossier is silent, the answer is extended by cause and effect from what is written; it will never contradict the canon.
Why only one impossible fact per world?
Because that is what makes a world convincing. One divergence, rigorously followed, produces a place that holds up when an economist, a lawyer or a soldier starts asking questions. Ten divergences produce wallpaper.
Can I use a world in my own work?
Read it, quote it and take inspiration freely. If you want to use a world substantially in something you publish, write to us — the answer is usually yes, and we would like to know where it went.
Why two languages?
Every world is written twice, in English and in Traditional Chinese. The Chinese is not the English translated: proper nouns get Chinese names, proverbs get Chinese shapes, and the sentences are written to read as Chinese.
What does it cost?
Nothing. The whole atlas is free to read, supported by advertising. Asking a Lorekeeper carries a small daily allowance, which exists to bound compute costs and deter abuse. There is no paywall and no subscription.