Both pies are of the bubbly, fried, turnover-style pies that they used to offer here in the US.
The Creme Brulee Pie comes with a dual filling of custard cream and bittersweet caramel sauce, while the Belgian Chocolate Pie has a chocolate crust and a Belgian chocolate cream filling.
Both pies cost 150 yen (~$1.44 US).
Photo via McDonald's.