Unlockable gameplay modes:
Unlock Multiplayer mode by beating Tiny Wario's stage in Single Player, then go to the Main Menu and select Multi.
There are six Minigames to unlock, which will appear on the left side of the map screen.
The buildings are unlocked in a chain after finishing the story mode.
Hold the Wiimote towards the title screen, with the buttons facing the screen. Wave it back and forth and you can make little images appear. Move the pointer on Wario's mustache and you can pull it.