private void GameInit() { KidsColors = new KidsColorList(); _dexterityHelper = (int)(GameWidth * .03); //3% of default is 18px, works for ~3y/o _defaultShapeWidth = (int)(GameWidth * .1); //10% of the screen's width _dropShapeCalculatedWidth = _defaultShapeWidth + (2 * _dropShapeBorderWidth); //make it big enough to fit the shape DragShapes = new List <Shape>(); DropShapes = new List <Shape>(); canvas.IsDoubleTapEnabled = true; canvas.DoubleTapped += Canvas_DoubleTapped; }