Modern virtual environment infrastructure, most commonly encountered in the guise of game engines, provide the means for the creation of a wide range of applications across the breadth of the cultural heritage domain, i.e. encompassing both tangible and intangible heritage. This chapter will list and discuss different types of interactive heritage applications, including museum exhibits, games and mobile apps, illustrated with a set of case studies that will highlight aspects of the real-time computer graphics technology of virtual environments that are particularly useful for cultural heritage.