Best Wii Game, like Melee was the best GCN before it.
Introducing the biggest line-up ever, players can choose to play as long awaited Sonic the Hedgehog, Metaknight, Wario, King Dedede, Snake and many other characters you can require later on in the game.
Brawl's adventure map gets revamped into the Subspace Emissary, a offline adventure mode that has you join up with other characters in Nintendo history, it doesn't have the best story-line, and stages can get repetitive, it's one of the easiest ways to unlock all of the characters.
The Vault is just great, for the first time you can create your own stages and share them with Wii friends, take screenshots and send them to friends, and share replays, which keeps the replay value of Brawl all the more special.
Multiplayer is great, but it is limited, their is no online ranking, but you can play against 4 players, but it can randomly be lagging and slow.
Overall if you are into fighting, and want to use Nintendo characters to kick butt , Brawl is the game to get.