Spec Ops: The Line gives a beautifully gauged Chinese burn to a genre that deserves more than just a slap on the wrist. From the moment Delta Force captain Martin Walker exits a biblical sandstorm into an apocalyptic Dubai, it just never stops twisting. Offered none of the usual immunity from the human cost of war, Walker and his squad must instead follow the path of Marlow in Joseph Conrad’s Heart Of Darkness, exposing themselves to the savagery upon which so much civilisation is built. Many lines are crossed by both characters and the game: psychological, technological, physical and moral. For the artists at German developer Yager, the challenge was to build a world that could push a soldier over these lines, as art director Mathias Wiese and art lead Jason Flanagan explain.