It's the death-bringing Darkwalker that does it. You can see them looming ominously in the distance, sweeping particle lasers at any and all who get in the way. Think the horrifying Tripods from H.G. Wells' science fiction classic The War of the Worlds spliced with a tarantula. But just wait till you get into one. As its spindly legs slowly kick into action, raising the cockpit and you high into the air, you can feel the hairs start to rise on the back of your neck. It's up to you then to drive the beast - controlling the reigns of this most lumbering yet destructive nightmare.