Deep beneath my desk lies a secret shame: impenetrable black thickets of power leads, sprouting forth across two overlapping extension units. Such a failure of cable management pierces my conscience like the beat of Poe’s tell-tale heart, and yet I’m forever powerless – as in, I can’t be bothered – to do anything about it. Yet even I was soothed by the Steam Next Fest demo for Plug It In, a chilled-out puzzle game about clicking chunky plugs into the right outlets.