This paper presents a proposition of how to enhance the experience of fear and anxiety in a First Person Survival Horror Game by exposing the player to an infra-sound source while playing. A game; The Rescue was developed for use in an experiment testing this proposition. 26 participants took part in a between subjects experiment, in which half of them were exposed to a 29 Hz constant frequency while playing the game. Physiological measures of Heart Rate, Heart Rate Variability and Skin Conductance Levels were recorded throughout the experiment, although only SCL combined with self-reported evaluations of the game experience, proved useful when later reviewing the results. Although the developed game proved to indeed be of a very scary nature, results showed no significant change between the two experiment conditions. As such the project was unsuccessful in proving an enhanced experience of fear and anxiety using the presented methods.