It takes a lot of work to animate a LEGO movie. Each character, environment, vehicle, cloud, or anything else you see on the screen is made of individual bricks — pieced together like a digital LEGO set. The actual animation isn’t traditional either. A stop-motion technique is used, where any changes in expression or other deformations are created by swapping out parts for ones with the desired geometry on a frame-by-frame basis. WIRED looks at this and other technical details that bring bricks to life on the big screen.