Computer-simulated environments making use of immersive acoustic technology provide the highest feel of realism. The analysis of the heart rate and respiration rate of people involved in videogaming has showed that those playing games with audio had a higher level of arousal (a combination of heart rate and respiration rate), demonstrating the immersion capabilities of audio in games. Therefore, immersive audio by means of proper loudspeaker setups or binaural technology must be considered as an important factor in the design of virtual reality and 3D gaming systems.