Curiosity was, its makers insist, an experiment. It ran from 6 November 2012 until May 26 2013 when Bryan Henderson, who'd downloaded the app around an hour before the close, tapped away the final cubelet and discovered what was inside the cube. A video, soon enough shared, outlining the plan for Henderson to be the presiding deity of 22Cans' next game Godus. "It is the ability to be a digital god," said Peter Molyneux. Or in other words, the prize is another promise.