Preheat oven according to directions on package. Line muffin pans with paper liners. Prepare the cake mix as specified on the box. In separate bowl, combine softened cream cheese and sugar. Make sure mixture is smooth. Fold in chocolate chips.
Fill the cupcake papers 1/3 full with the chocolate cake mix. Top with the cream cheese mixture.
Bake according to box instructions or until the cream cheese mixture just starts to turn a light golden color.
