This thesis analyses the benefits of applying game elements to a Virtual Reality application for overcoming phobias, with a special focus on acrophobia, i.e. the fear of heights. Two different prototypes using the Oculus Rift head-mounted display were developed with a gradually exposure to heights. Both prototypes shared the same acrophobic scenario, but one included extra features from games such as engagement, motivation or goals. Twenty-four participants, divided into two groups of twelve, with moderate aversion to heights tested the prototypes. The participants’ heart rate and the time that they looked down from high altitudes were also measured and evaluated. The study showed slightly higher results regarding motivation for the prototype which included the additional game elements. Future studies should include a different head-mounted display, which would allow a longer time of play without motion sickness, and the participation of people diagnosed with acrophobia.