Visuals: looking back, they look dreadful, but the power smashes and power serves, whatever, still look nice.
Not a lot of detail in anything much though, but this is not the games strongest department.
6/10
Audio: Very... tennisey? Well, I suppose only the racket sounds are good and the sounds of Bowser and Mario roaring when they put every ounce of strenghth into their serve, but tennis games don't need good music.
7/10
Gameplay: I suggest playing in doubles mode with a mate, it is superb.
There are loads of characters, each with pros and cons and there are loads of courts for you to play on.
Also, Waluigig makes an appearance for the first time!
The usual rules of tennis apply, but it is still much funner than any other tennis game I have ever played.
8/10
Longevity: My eqaution:
3 mates + 4 controllers + you + N64 and a copy of Mario tennis + a doubles match = a bloody good time.
10/10