Surgeon Simulator 2013 is a darkly humorous over-the-top operation sim game where players become Nigel Burke, an ordinary guy taking life into his own shaky hands, performing life-saving surgical manoeuvres on passive patients.

ENGADGET: The cost of a botched operation? ?6.99 on Steam thanks to Surgeon Simulator

Western governments are concerned that most of the world's oil and gas is in the hands of hostile or shaky governments.

ECONOMIST: Energy