Game Boy Camera
The Game Boy Camera is an accessory for the Game Boy which allows the user to take pictures and view them on the Game Boy screen. A comic called "Rummelplatzquatsch" was made to promote the Camera in Germany, and also featured the Camera heavily.
The comic centers around a Game Boy Camera used by a self-proclaimed fortune-teller to foresee the future. Mario falls for the trick when the Game Boy Camera depicts a toilet brush to him and few seconds later such a brush is dashed into his face indeed. Immediately he buys the Camera, being excited about foreseeing his own future. However, the device only brings misfortune to him. After depicting a cake, one is thrown into his face; after depicting a train, he is run down by one; and so on.
Trying to get rid of the Camera, Mario returns to the fortune-teller who turns out to be Luigi, explaining that it was just a normal Game Boy Camera he sold to his brother, and that it cannot foresee the future. He attempts to prove his point by turning the device on. After it shows a dog, suddenly a herd of dogs enters the tent. Now Luigi is terrified as well and the brothers run away, dropping the Camera. At the end of the comic, the reader sees Satan's hand grabbing the Game Boy Camera, and it is explained that this is the only copy that has fallen into the devil's hands.