A good sport game with a great physics and a big cast of characters.
The controls are very smooth.
Being able to switch between right handed and left handed is also a great point, and there are plenty of modes to play both alone or with friends.
The graphics are really good looking too.

But damn couldn't they register a second line for Luigi? I had a 25 minutes match and he shouted "OH YEAH." everytime he did hit the ball.