This is "Dragon Quest Monsters 2: Cobi's Journey," a game for the Game Boy Color. This listing is for the cartridge only. This is a masterpiece RPG packed with replayability, where you breed monsters to create the strongest party. I have confirmed that it boots up and reaches the title screen on my Game Boy Advance SP. The save battery is not guaranteed. Due to its age, the game has signs of use, minor scratches, and dirt. Please purchase only if you understand that this is a used item.