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For the squadmate mode on the Wii, the player with the second can enter by pressing . The second player is limited to fire, interact/reload and cycle weapons. To exit this mode, press to end the cooperative mode. The Wii also has the controls designed for the Wii Zapper. Check the button layout and motions you're going to use if you decide to choose the Wii Zapper as an alternative control method instead of the Wii Remote and Nunchuk.

PlayStation 3	Wii	Windows	Xbox 360	Action
				Move up/down; Strafe left/right.
				Change stance. Hold to go prone.
				Aim through your gun.
				Jump.
				Toggle Special Weapons. Hold for Kill Streak Reward (Multiplayer only).
				Cycle Normal Weapons.
	or Shake		Click	Melee attack.
			Click	Lock camera/sprint.
				Interact/reload. Alternative way of reloading is the shake .
				Throw primary grenade. To throw secondary grenade, twist counter-clockwise while pressing .
				Pause/show objective.
				Scoreboard (Multiplayer only).
				Fire.
				Aim/look. Point at and move the reticle around the screen.