***Please Note: 3DS titles are not compatible with standard Nintendo DS consoles***   Mario Tennis Open is an upcoming sports title for the Nintendo 3DS. It is the richest Mario Tennis game ever!In Mario Tennis Open on Nintendo 3DS, the basic controls are similar to previous titles in the series, but with the addition of gyro sensor and Touch Screen controls - made possible thanks to Nintendo 3DS - you can enjoy tactical tennis with greater depth than ever before.