For the best experience, you should play this game by connecting the Wii Remote™ and the Nunchuk™ to the Wii Zapper™. However, you can also play it without the Wii Zapper by holding the Wii Remote in one hand and the Nunchuk in the other. The function of each button is the same when playing in either of these two styles.
Aim crosshair
Display or close Pause Menu
Fire (hold for rapid fire), confirm
Vacuum Can Energy, confirm
Display HOME Menu
Note: The functions of and can be swapped on the Options Screen.
Pointing
Aiming the Wii Zapper at the screen is called "pointing".