Ages 8–15 · Free · Plays in any browser

The city built with words

Tomospire is a voxel world with a twist: the coolest things aren’t crafted with taps — they’re described. A pet. A race car. A plane. A whole shop. The clearer the idea, the better the result — precise thinking and fluent AI collaboration, picked up through play.

Live from the city

Real worlds and real ideas, straight from the game — right now.

playing right now
public worlds open
player ideas built into the game

Public worlds

    From the idea board

      Ways to play

      One city, many doors: build together, hunt friends in a maze, crack logic puzzles — or dream up a whole world with an AI.

      🌍

      Worlds & rooms

      Build side by side in shared worlds. Invite friends with a short room code, or stroll the hub and step through a portal into any public city.

      🙈

      Hide n’ seek

      Real hide and seek in giant mazes — a seeker, hiders, a ticking clock and a radar that beeps faster as you close in. Three mazes, from open and friendly to a proper labyrinth.

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      The Inventor Lab

      Tap-to-solve logic puzzles with switches, wires and gates — the thinking behind every machine in the city, one “aha!” at a time.

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      Worlds imagined with AI

      Describe a dream world to ChatGPT, Claude or Gemini — copy the game’s magic instructions into any AI chat, paste the answer back, and walk around inside it. One tap publishes it as a shared world friends can join.

      How it works

      1

      Take a challenge

      The AI Workshop sets a mission: design a pet, a race car, a sweet shop, an airplane.

      2

      Describe it in words

      Vague ideas come out hilariously wonky — on purpose. “A dog” gets you a sad grey blob.

      3

      Sharpen the idea

      Friendly hints show what’s missing. Add the details, and the real thing appears — then it follows you, drives, or flies.

      4

      Earn real powers

      Planes, bulldozers, paint shops and more unlock only by completing challenges. Thinking is the power-up.

      Skills that stick

      It never feels like a lesson — but every unlock exercises an ability that lasts.

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      Clear thinking

      Turning a fuzzy wish into a precise description is the core skill behind writing, engineering and design.

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      AI literacy

      Describe, check the result, refine, try again — exactly how people will work with AI for decades to come.

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      Creative persistence

      First tries fail funny, not frustrating — and refining an idea beats giving up on it.

      For parents

      Not another tapping game. Tomospire rewards exactly one thing — putting an idea into clear words — and that skill spills over into homework, stories and everyday conversation.

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      Screen time that gives back

      Every unlock is earned by describing something precisely. There’s nothing to watch passively — the game simply doesn’t respond to it.

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      Practice for an AI world

      Your child will grow up working with AI. Here they build the healthy habit early: say clearly what you want, check the result, refine it — always with them in charge.

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      Private by structure

      No account, no profile, no personal data. Worlds are invite-only, there are no ads or trackers, and progress lives under a simple code you can stick on the fridge.

      How to use it at home

      1. Play the first challenge together — describing things out loud is half the fun.
      2. Ask for a tour afterwards: “What did you write to get that plane?” The answer is the learning.
      3. Write the save code down together — that little code is the whole “account”.

      For schools & teachers

      A descriptive-writing and AI-literacy exercise disguised as the game your class already wants to play — and it runs on whatever hardware the classroom has.

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      Zero setup

      Opens in the browser on any Chromebook, tablet or laptop. No installs, no licences to manage, no student sign-ups.

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      No student data

      There are no accounts, so there’s nothing to collect — no names, no emails, no profiles. The paperwork stays as simple as the login.

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      Fits your curriculum

      Descriptive writing and vocabulary in language classes; prompt design and AI literacy in computing; iteration and feedback in design lessons.

      A ready-made lesson shape

      1. Create a class world and put its room code on the board — only your students can enter.
      2. Set one challenge for everyone: “design a race car that actually drives”.
      3. Compare first attempts — wonky results show exactly which details were missing.
      4. Close by reading the best descriptions aloud. That’s the lesson, in their own words.

      Planning to use Tomospire in class? We’d love to help — write to us at [email protected]

      Designed with care

      The best design choices are the quiet ones. A few of ours:

      No accounts

      Play starts instantly. Worlds and progress live under simple random codes — no sign-ups, no profiles, no personal data involved.

      🔑

      Invite-only worlds

      There’s no public server list. A shared world is a small space others enter only with its code.

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      Builds stay as built

      Only a build’s creator — or the world’s owner — can change it, so creations stay the way they were made.

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      Looked after

      Every world can be reviewed, restored to an earlier moment, or closed by the operators when something’s off.

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      Quiet by design

      No third-party ads, no analytics trackers, nothing sold to anyone.

      FAQ

      How much does it cost?

      It’s free during the alpha. An optional plan with extras may come later — never ads, never loot boxes.

      What does it run on?

      Any modern browser — phone, tablet or laptop. You can add it to the home screen like an app; there’s nothing to install.

      Is this Minecraft?

      No — it’s an original browser game. It shares the friendly blocky look, but the heart of it, building with words, is all its own.

      How do friends join?

      With a short room code. Only people who have the code can enter, and each world stays a small group.

      Ready when you are

      Open it, take a challenge, and see what a clearly-put idea can build.

      Play free — no download