"Camelot returns to Mario sports with a game that hits nearly as often as it misses.
Mario Tennis Open is a puzzler. On one hand, it’s a great tennis game that, much like its predecessors, is simple to grasp but also has depth. On the other, there just isn’t much to it. With a lack of strong single-player content, Open’s focus is shifted onto multiplayer, which, given how poor the online turned out, is disappointing.", writes NintendoWorldReport.