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    Investigate Your Senses

    Discover how you perceive, and fail to perceive, the world around you.

    Explore Illusions

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Explore Illusions

The Illusions Index is a fully searchable curated collection of illusions. Browse the illusions below to find out more.

You can also search by keyword or by one or more pre-defined tags, which allow you to compare and contrast different types of illusions.

Master of Illusions Quiz

Test your knowledge of illusions. Can you complete all four levels of our quiz to earn your Master of Illusion certificate? All the answers to the questions can be found in the Illusions Index.