While this is not the most complete Mario Tennis experience, I really enjoyed this game when it was released due to its handheld nature and being (at the time) the most advanced Mario Tennis you could play in a portable device.

The game makes use of colored circles to let the player know what shot should be used to get the most advantage of your opponent. This becomes critical when playing on harder tournaments and it a way deprives full freedom of tennis play compared to other games in the series.

There is a classic mode where you have classic Mario backgrounds and you use your shots to defeat enemies which is pretty cool and a throwback for Mario fans.