YS-3 is an interactive animation device. This device makes it possible to display animations with an actual sense of depth and let a viewer control developments of animations. It has seven plastic displays and each display is inserted into different level of tower-style device. With this structure, all animations on different displays are stacked like multi-layered animations. Different from usual displays, there is a space between displays. So, it can provide visual experience that cannot be attained by flat-style displays. And a viewer can change the composition of displays in the device. What decides developments of animations is this composition. Visual experience gained from displays and animations showed on displays have not been related to each other. YS-3 is an interactive animation device that connects developments of animations to visual experience.