You may have felt immersed in a comic book before, but never quite so literally as this. Madefire has released a free Gear VR preview app that lets you read its Motion Books in virtual reality. As you might guess, it's all about depth. Pages now fill your view, and creators can add 3D layers to individual panels. While it's not real 3D (your childhood dreams of exploring comic universes will have to wait), it beats staring at completely flat pictures on a PC or tablet.