Game Introduction: St. Patrick's Day (St. Patrick's Day) is the annual March 17, are in order to commemorate the sacred guardian of Patrick Ireland. This holiday originated in the late 5th century Ireland, has become Ireland's National Day. St. Patrick's Day in the United States on this day, people usually hold parades, church services and dinner and other activities. The United States likes to wear the Irish people trefoil alfalfa, with Ireland's national colors - green, yellow and white decorated room, wearing a green dress, and guests donated trefoil alfalfa and other accessories. Operations Guide: mouse to operate