FAQ

An AI-powered deduction game. You pick a topic (like "famous painters" or "dog breeds"), and the game generates a board of Wikipedia entries with one hidden as the secret answer. Ask yes/no questions to narrow it down and find the hidden card in as few moves as possible.

Yes — Definitely true of the hidden card.

No — Definitely not true.

Sort-of — Partially true, or depends on interpretation.

Maybe — The AI isn't confident enough to commit.

The AI sees two things about the secret card: its Wikipedia article and its image. You can ask about either one.

Good questions about the image:

• "Is the subject wearing glasses?"
• "Is there water in the image?"
• "Does the subject have dark hair?"
• "Is the image a painting or a photo?"

Good questions about the Wikipedia article:

• "Is the subject still alive?"
• "Was the subject born in Europe?"
• "Is the subject associated with the 20th century?"
• "Is this a mammal?"

Start broad to eliminate half the board, then get specific.

Yes! Ask in whatever language you like — the AI will reply back in the same language.

A cryptic, crossword-style clue about the secret card. Tap the hint button in the toolbar to reveal it. Using the hint doesn't count against you — it's there if you're stuck.

Yes! Type your guess directly into the question box. If you say something like "Is it Thomas Edison?" or "I guess Edison", the game will recognize it as a guess and check it for you.

Concrete, specific categories work best. Be explicit about what you want and what you don't.

Great prompts:

• "Game of Thrones characters (not the TV series, books, or locations)"
• "Dog breeds"
• "Famous painters (not paintings or art movements)"
• "Taylor Swift songs (not albums or tours)"
• "Olympic sports"

Avoid:

• Vague prompts like "things" or "stuff from the 90s"
• Very niche topics that may not have enough Wikipedia entries

Adding exclusions (like "not the TV series") helps the AI avoid pulling in loosely related entries.

12, 16, 24, 48, 128, or 256 cards. Bigger boards are harder — more suspects to eliminate. 24 is the default and a good starting point.

A new board every day at midnight UTC. Everyone plays the same puzzle. Your streak is tracked locally — complete consecutive days to build it up.

Yes! After creating a board or winning, use the Share button to copy a puzzle link. Your friend gets a fresh game on the same board with a different secret card.

No — the AI blocks blatant cheats. Questions about the title's spelling, letter count, or alphabetical position are also blocked. But you can ask about anything factual, visual, or categorical.

The AI answers based on the card's Wikipedia text and image, so it's usually accurate. "Maybe" means it genuinely isn't sure. Occasionally it may get a nuanced question wrong — that's part of the challenge.

Each player gets a secret card and the opponent tries to guess it. It's turn-based: ask a question on your turn, answer on your opponent's turn. First to correctly guess the opponent's secret wins.

All board entries are real Wikipedia articles. The images and summaries are pulled live from Wikipedia's API.

Game history and daily streaks are stored locally in your browser. Clearing your browser data will reset them. There are no accounts.

Maybe! But I like making fun things and trying out new tech. Each question costs roughly what an SMS did in the 2000s. If the game gets popular I may need to introduce a freemium model to keep the lights on. With luck, more players means a better cache hit rate and lower per-question costs — but that's still TBD.

If you'd like to help keep it running, you can support me on Ko-fi.

Join the Discord — it's the place for suggestions, bug reports, and hanging out with other players.