Mr0range_crafts provided some details regarding the process of making the diorama. They revealed that the design used a combination of acrylic, paper, and cardboard to help pull off the 2D effect. And ...

A new kind of 3D display could take the form of an acrylic cube with an image inside, which can be erased and rewritten to easily. The new technique can be used to make 2D, 3D and even animated images ...