Animals
Cats, birds, insects, reptiles, amphibians and marine mammals: discover animal groups and learn to tell them apart.
Hidden Links: the picture quiz
Suggested age: Easy from age 7 · Medium from age 9 · Hard from age 10 · Expert from age 12
Well played!
How to play Hidden Links
Click three pictures on Easy, four on other levels. The game checks your group automatically when all pictures are selected. Click a card again to deselect it.
A correct group joins together with an explanation. A wrong selection is marked, then cleared so you can try again. Picture names stay visible at every level. Expert does not flag nearly correct groups.
Discovery mode allows unlimited mistakes, with no timer or account required.
Choose a theme
World landmarks
From the Eiffel Tower to the Taj Mahal, connect landmarks to their countries. Original silhouettes explore six destinations and their architecture.
Inventions and objects
What connects a magnifying glass and a telescope? An hourglass and a watch? Explore the shared functions of inventions and objects.
Frequently asked questions
Is the game free without registration?
Yes. Games are free and progress is saved in this browser.
How do the four levels work?
Easy has nine pictures and names the groups. Medium has twelve with hidden groups. Hard has sixteen. Expert keeps sixteen and gives stricter feedback without flagging almost-correct groups. Names are always visible.
Is the daily puzzle the same for everyone?
Yes, at the same level. It changes at midnight in Paris. Results include the level and mistakes.