Mario is so much more than just a platforming mascot and racer extraordinaire, he's also the star of Nintendo's Tennis series, where all our beloved Nintendo characters square off in tennis matches with little twists here and there. The newest chapter in the series, Mario Tennis Ultra Smash, recently hit store shelves, and Dóri is on hand to try out the game. We'll serve up today's stream at 15:00 (16:00 CET) over on our live page.