The secret redacted game at the Xbox Games Showcase is Call Of Duty

World’s shortest mystery (Picture: Microsoft)The not-E3 summer showcase from Xbox was supposed to feature a secret game but fans have already proven that it’s this year’s Call Of Duty.Last year’s Xbox Games Showcase in June was undoubtedly the most successful piece of marketing Xbox has enjoyed in years, perhaps ever. It easily eclipsed PlayStation’s anaemic equivalent and showcased a number of new and previously announced titles – including a 30 minute showca