Daily game · From the team behind the free AI-visibility scanner

🧠 AI or Human?

Five short passages a day. Some were written by classic authors — Thoreau, Darwin, Twain, Muir. Some were written by an AI for this game. Read each one and call it. Same puzzle for everyone, new at midnight UTC.

How to play

1. Read the passage. Decide: classic human author, or AI?
2. After each guess the true origin is revealed — with the author and work for human passages, and the tell to look for when an AI wrote it.
3. Score 4/5 or better to keep your streak. Copy your spoiler-free emoji grid and challenge someone.

Where the passages come from

Human passages are drawn from public-domain nonfiction — Henry David Thoreau, Ralph Waldo Emerson, Charles Darwin, John Muir, Mark Twain, Benjamin Franklin, Isabella Bird, Mary Kingsley, Gilbert White, G.K. Chesterton and others — lightly adapted for length. The reveal names the author and work every time.

AI passages were written by an AI specifically for this game in 2026, on deliberately timeless topics, and are labeled as AI-written on reveal. Nothing here pretends to be something it isn't — the whole game is about learning to notice the difference.

FAQ

How is the daily puzzle chosen?

By hashing the current UTC date over the passage pool — two or three AI passages per day, deterministically, so every player worldwide gets the same five. A fresh set drops at midnight UTC.

Does sharing my grid spoil the game?

No. The grid shows only right (🟩) and wrong (🟥) — never which passages were AI — so your share can't leak the answer key.

Why does this exist on a scanner site?

Because telling AI from human is exactly what AI shopping agents do to your store's pages every day — in reverse. If your product pages read ambiguously to machines, agents skip them. That's what the free AgentReady scan measures.