Gameboy Color game

Complete with box and instructions

Go deep within the mysterious ruins of the Monster Rancher world with Cox, the most adventurous and daring young anthropologist youll ever meet! Journey through dozens of challenging stages, search for hidden keys to unlock helpful monsters, and collect all sorts of cool artifacts along the way. But be careful, you never know when you might run into trouble. For the ultimate in action and adventure, become a Monster Rancher Explorer today.