You might be still, but the pages in this book certainly aren't. Prepare to be moved! Flick through the pages to discover amazing optical illusions! You won't believe your eyes when you see these seemingly static pictures move around on the page. With over 90 images, a helpful introduction to explain how they work and a holographic moving image on the cover, this book will never cease to amaze you. Watch hearts flutter, alien invaders descend, and a flag wave itself in this thrilling collection of optical illusions!