This is a photo real rock surface that could also be rearranged in many ways, for example by duplicating the geometry and modifying it, adding deformers like 'bend' or braking it down to several smaller elements and rearrange them in different ways.
This geometry is meant to be used with a self illuminated shader also known as a 'surface shader' or an 'unlit shader' regardless if its used for films or games. Ideally you should choose the right balance of how much the geometry is being affected by lights in the scene.
'One or more textures on this 3D-model have been created with images from cgTextures. These images may not be redistributed by default. Please visit cgtextures for more information.'