Virtual reality aims to simulate real or imagined environments that users can interact with. While VR hardware from Oculus, HTC Vive, Sony and others is launching, investments so far exceed $300 million but the market potential remains unproven. For developers seeking funding, business models, compelling content, understanding VR and technology, and realistic projections will need to be demonstrated to convince investors amid high costs and limited content in the early market. Experts believe forecasts have overestimated the short term financial potential of VR.