This paper presents an interactive virtual reality game using real and virtual objects with general beam projector and computer vision. We show how the computer recognizes the objects and makes the virtual objects move after detecting the real objects in the game space created by a beam projector. To achieve the goals, we developed two methods: find objects distance (FOD) method and find reflection angle (FRA) method. After detecting the real and virtual objects, the methods predict the next moving direction of virtual objects. This interactive virtual reality (VR) game is named as Ting" which contains various fire-shaped virtual objects and bamboo-shaped real objects. "Ting Ting" game's core technology can be used in various application area as an interactive communication engine. These include but are not limited to, for example, an education game in schools, or an entertainment application in museums and/or science halls.