Even more characters then the last game, but you start out with most of them unlocked.

Many new cooler attacks and bigger levels to play on.

Graphics are similar to the last game, but the effects are a lot better. Plus the game runs perfect all the time. You don't have to worry about bad level/character combinations to make the game sluggish.

Gameplay has changed a little, but it's much easier to pick up then the last.

No more pointer to keep track of on the screen. So now you don't have to keep your Wiimote pointed at the screen.

A lot of the character building is different or gone and is not combined with the story mode.

The story mode is pretty short and skips over a lot of the story. But it seems to fill in gaps the last game had. So if you play both games you should have a pretty complete story.

If you are used to how the last game plays, you will have to adjust some.