Venture Beat – Every now and then, International Game Technology, the world’s biggest slot machine maker, flexes its muscle. That’s the case today as it announces that its DoubleDown Casino Online game will have a version based on Hasbro’s Monopoly Plus brand. IGT’s DoubleDown Casino division is one of the hottest providers of social casino games on Facebook and mobile. Now players can enjoy the iconic gameplay of Monopoly as they play DoubleDown’s popular slots game on Facebook. John Clelland, vice president of global marketing at IGT Interactive Group, said that his company is constantly seeking new ways to entertain…