novelty:

Since its introduction as an arcade game in 1981, Pac-Man is acknowledged as both the most recognizeable character in electronic gaming as well as the longest-running video game franchise. In America Pac-Man achieved unexpected success among gamers virtually overnight. Its success led to numerous spin-off products; this window novelty is a prime example. The device, when stuck to the inside of an automobile window, would bob with action in imitation of Pac-Man's forward motion.