My 8 year old cousin and I LOVED to play this game together and head-to-head! It's REALLY fun and the grafics are great!
If you're playing doubles, your team has to be Donkey Kong and Daisy or Bowser and Peach. They work GREAT together!
It's a solid, well-designed tennis game, but, unfortunately, that's all it really is. There's nothing very exciting or uniquely Mario-centric about it; you just hit the ball back and forth. And the Special Games, like Ink Showdown and Galaxy Rally, don't stay fun for very long. It's worth a rent, but even this hardcore Mario fanboy wouldn't plop down forty bucks for it.