Gauss Tank, realtime game model.
It uses normalmap, baked from hi-poly mesh.
16.000 triangle, a detailed lowpoly model.

Textures: color, normal, specular maps, all are 2K resolution. It uses detail map too.
Created with Blender and Photoshop.
Some renders:
http://www.etyekfilm.hu/gauss_render_05.jpg
http://www.etyekfilm.hu/gauss_render_all.jpg
http://www.etyekfilm.hu/gauss_render_04.jpg
Hipoly renders:
http://www.etyekfilm.hu/gauss_render_01.jpg
http://www.etyekfilm.hu/gauss_render_02.jpg
Lowpoly wire:
http://www.etyekfilm.hu/gauss_wire.jpg