Mario Tennis (USA, Nintendo Virtual Boy)

The very first game in the Mario Tennis-series, for the obscure, often forgotten VR-headset Nintendo released in the mid 90s, as a follow up to the Gameboy. 

While you'll get a headache playing this, the game is fairly decent, but very simple by today's standards. 
Entirely in Japanese, but the game has very little text, and the console itself is region free. 

Condition: Great, but missing dust cover. Comes with manual!