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Optical Toys

Optical Toys

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Optical Toys—interactive optical illusions (Thatcher effect, café wall, and more).

1/23/2026

About This Site

What is it?

optical.toys collects interactive illusion demos—examples include the Thatcher effect, Shepard tone, café wall, lilac chaser and many others—each as a small toy page.

How to play

  • Open Popular or New items from the index
  • Interact with each demo’s controls
  • Fullscreen helps for motion effects
  • No account required

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