This game has everything you could ask for!
With Super Smash Bros. Brawl. They have added so many characters there is really no one else to think of to add to it. Solid Snake from the Metal Gear Solid Series has made a debut to this game and so has Sega's character. Sonic The Hedgehog. With so many characters there are so many different battles to have and find your true character.
Nintendo has also added Online Play which has been growing since Brawl's Launch. Finding someone to fight online takes a while due to a low amount of servers at the moment, but Nintendo is working on fixing that and it's been gettting a little better. You can play with friend codes or with anyone in the world.
The thing that was improved from Melee, was the story mode. The Subspace Emissionary is a great story. It's amazing how no voice acting or text is displayed through out the whole story and yet you can easily follow the whole story through. It has some hilarious moments that will just have you cracking up! I know I couldn't stop laughing. Nintendo has done something right with Brawl. The delay was worth the wait.
If you have a Wii there is no excuse not to have this game. This is a must have for any Wii owner. Big or small. It does great at get togethers or at parties. Go pick this game up as soon as you can!