There were five sets in the "Famicom Mini Console" series, and each set came with two "game cartridges" and a small Famicom figurine. One of these sets included Super Mario Bros. and Balloon Fight.
The set has smaller versions of the boxes for the Famicom, Super Mario Bros., and Balloon Fight. Within the boxes are the corresponding items. The Balloon Fight box is slightly smaller than the Super Mario Bros. box.