Activision has demonstrated a new controller that monitors a player’s heart rate and adjusts gameplay according to their level of fear.

The gun-shaped controller, known as the Fearmaster, was shown working with Cabela’s upcoming Dangerous Hunts 2013.

Metal panels on the gun’s grips check the player's heart rate, and an infrared sensor on the scope checks the gun's steadiness. These inputs combine to affect the game directly, blurring the screen when the player appears nervous, or rewarding low heart rates with a bullet time effect.

Both monitoring systems may be switched off.

The technology only works on the PlayStation 3 and Xbox 360 versions of Dangerous Hunts 2013, which will retail at US$79.99 with the gun included. Both are due out on October 23.

The Wii and Wii U versions of Dangerous Hunts 2013 will be out on October 23 and November 18 respectively.