Mario Tennis: Ultra Smash feels like a disappointment in every given way. With one stadium and limited online options, you already see how this game is shaping up. Then you also take into account the slight changes to the formula and how little everything in the game seems to matter. The game feels like a gap filler and not a great one. It fills the niche for a Mario sports title on Wii U, but it also feels like a fall from grace at the same time. Even when compared to Mario Tennis Open, Camelot wasn't inventive or creative with this one. That makes the situation so darn depressing.