Press Circle,Left,Right,Cirlce and you'll see a little character on the corner letting you know that you are in another world.
Beat the Player vs Computer mode with character and you'll recieve that characters FMV scenes.
In the Challenge mode beat all of the levels without dying,using few balloons and beating it fast and you'll recieve a Superior Rating
To get an A rank in each and every one of them look at what each level wants you to do complete what it says and you'll get an A rank in Challenge mode.
In win contest beat it with the same character over 15 times and you'll get a complete picture of that character and you'll hear an applause.
Once you have unlocked all the characters and send every one home go to Win Contest and you'll fight all the bosses in a row.
*The bosses you'll face are Monkey,Chirp Chirp Fishes, Purple Dunk, Fat Bubbleloon and Dunk.
Will first of all you start off with the normal characters and also you'll here a different music if you fight boss.
Beat Player Vs Computer at the hardest level and beat it with Musashi and SSB
Once you have beaten monkey beat win contest 7 more times(without loosing) and beat the Chirp Chirp Fishes.
To unlock Dunk go to the arcade mode and go to puzzle and complete it with every one.
To unlock the Fat Bubbleloon you must complete the puzzle mode without dying with these characters:Jacks,Luna, SSB and Musashi.
* You don't have to beat it with everyone every one I mentioned but you do have to beat it with SSB and Musashi.
Beat Win Contest 7 times without loosing and beat Monkey to unlock him.
Once you have beaten Chirp Chirp Fishes beat win contest 7 more(without loosing) times in order to unlock him.