From the Super Mario Wiki
Divider Conquer is a minigame souvenir found in the Games folder in the game WarioWare: Twisted! Its name is a pun on the term "divide and conquer". The player controls a ninja-like man trying to break as many walls as he can. At the proper angle, he will fly into them. The objective is to break down as many walls as possible before hitting the ground. When the man does this, the game will end and tell the player how many walls he has broken. If the player launches the man too high, he will hit the ceiling and fall to the floor slowly.