Wow, what a game. It has many new additions, including online WiFi. There is one major flaw in the game though.
The first note i would like to make, is the great training mode, it has excellent practice rules for you to get started, but it probably wont help you one bit online.
Then there is the tournament mode, a mode in which you play other teams to gain the top rank and earn the striker cup trophy, and a few unlockables along with it.
The first time i went online with it, i was amazed that they had a full leaderboard an a top player. If you get the top rank you're mii will be posted in the lobby. The competition is extremely fun.
But...every once in a while you'll find somebody that has found some kind of glitch in the game that helps him cheat and score as many goals as he wants, and they arent using any cheat systems at all.
Other then the glitching, the game is seriously fun, and competetive. But this game is not a must have at all.