Abstract: A home TV-game apparatus of this invention has a memory storing a game program, a CPU for processing the game program, and time management elements managing a time of the game in correspondence with real time. In the home TV-game apparatus, therefore, a virtual reality type game using real time, e.g., a roll playing game, is easy to play and easy to make since the clock control of the game program does not have to be considered, and the development cost of the virtual reality type game is not expensive.