AnomalyGuessr

How to play

Five scenes a day. One anomaly in each. Click it.

  1. Look at the photo. Every scene is a real public-domain photograph from a museum, library or archive.
  2. Find the one thing that cannot be there. An AI smuggled one modern object, time traveler or piece of futuristic technology into the picture.
  3. Click the spot. A hit scores up to 100; each miss costs 10. Afterwards you see the untouched photo and why the anomaly is impossible.

Time-travel protection squad. An anomaly has been reported in a historical photo: something that could not possibly be there, a modern object, a time traveler or a robot from a fictional future. Click the spot where something doesn't belong.

Daily quiz · October 23, 2026

Five scenesFree, no account, a new set every day.

  • Battery position, ammunition shelters and personnel, 1916
  • Interior vault painting with keystone and ribs, Kerkstraat, 1975
  • Foot ferry near Rijswijk, Rijswijk, 2004
  • Båtstø, Høvik Pier, 1920
  • Processions of Mendrisio #98, Mendrisio District, 2023

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How it works

  1. Look at the photo. Every scene is a real public-domain photograph from a museum, library or archive.
  2. Find the one thing that cannot be there. An AI smuggled one modern object, time traveler or piece of futuristic technology into the picture.
  3. Click the spot. A hit scores up to 100; each miss costs 10. Afterwards you see the untouched photo and why the anomaly is impossible.