Immersive Virtual Reality (VR) is often used to visualise architecture, interior design and building use. This study looks into the use of VR in evaluation of emergency signage with respect to fire evacuation. In a single case study experiment using Serious Gaming (SG), test persons were immersed into VR using a head mounted display (HMD) and asked to evacuate a test building in a fire evacuation scenario. The case study experiment provided a keen understanding into people's reaction to emergency signage and how detection of such signage during evacuation can be improved.