WordSpace is a word-guessing game where you find a hidden word by exploring semantic space — a 3D map of how AI understands meaning.
You can play in ChatGPT or Claude. Use the buttons above to get started.
How It Works
In semantic space, words that are close together in meaning — like "joyful," "merry," and "delightful," or "cat," "animal," and "pet" — are close together in space. Words with nothing in common live far apart.
You guess words and watch where they land in this space. Each guess gets you closer to—or further from—the mystery word.
If only it were that simple. Our map shows only 3 dimensions. In reality, AI positions words using 512 dimensions. When we compress that down to three, we can see relationships between words more clearly, but some distortion is inevitable. We need a fourth dimension to help.
The Score
The similarity score tells you the true distance in the full 512-dimensional space, before any compression. Blue means cold. Red means hot. Follow the heat.
When the 3D positions seem to disagree with the score, trust the score—it's measuring what the visualization can only approximate.
What You'll Discover
This is the map AI uses when it reads. Every time you ask a chatbot a question, it's navigating a space like this one—finding words that cluster near your meaning.
Playing WordSpace won't teach you everything about how AI works. But it will give you a feel for the geometry underneath—something most people never see.
You might notice some surprises along the way—like why "hot" and "cold" sit closer than you'd expect. That's the kind of thing this game reveals.
Privacy
The WordSpace app is stateless, which means it forgets everything immediately. We do not know who you are or where you're calling from. We're simply passing data and instructions to ChatGPT or Claude, and we retain no personal or conversation data. We keep logs of tool calls. Anonymized beancounting. Doesn't make for exciting reading, but lets us know you're there.
You are subject to OpenAI's or Anthropic's data policies, depending on which AI you use.
For the full details, see our Privacy Policy.