The product is a Dr. Mario cartridge for the Nintendo Game Boy, released in 1990. Published by Nintendo, this puzzle game is part of the Mario video game series and is rated E for Everyone. It offers multiplayer features and is compatible with NTSC-U/C (US/Canada) region codes. Made in Japan, this unit is a single cartridge that has been tested and is in working condition. Ideal for fans of the Mario franchise and classic puzzle games, this Dr. Mario cartridge allows players to enjoy a nostalgic gaming experience on their Nintendo Game Boy console.