Wow:
http://www.fastcompany.com/blog/karin-fong/between-spaces/spaces-between-leave-us-betwixt
This is a great post by Karin Fong, a motion graphics/designer at Imaginary Forces. She’s talking about 2.5 d.
Depending on when/if you choose to read her post. Wikipedia defines 2.5 D as
2.5D (”two-and-a-half-dimensional”), also called pseudo-3D, is an informal term used to describe either a) graphical projections and techniques which cause a series of images [...]