Video game, as an interactive medium, has been designed for many different purposes such as education, entertainment, advertising and etc. What makes a game compelling as an experience in order to satisfy different purposes is the purpose of “Space Invaders 2006 “. “Space Invaders 2006 ” is a public video game which isn’t just fictional space that the players escape into but takes the advantage of a real world space with the architecture inside and transforms them into a game playground. Basically, “SI 2006″ is a video game which is projected onto a building. The player controls an aircraft by moving his/her body in the space to shoot down the invaders before they move off the building.