Mario Tennis Japanese Nintendo Game Boy Color

This cartridge is in Great condition overall for its age and works well, it is the Japanese version. 
(Cartridge Only)

Mario Tennis for the Game Boy Color is a sports role-playing game that blends classic tennis gameplay with RPG elements. Players create a custom character, train at a tennis academy, and compete in tournaments to improve stats and unlock new opponents, including familiar Mario characters. The game mixes fast, accessible matches with a surprising amount of depth and progression.