Chee-Chai Alien

Chee-Chai Alien (ちっちゃいエイリアン, Chitchai Eirian; "Tiny Alien") is a video game developed by Creatures, Inc. and released on the Game Boy Color in Japan on February 27, 2001. It was designed and developed by Hirokazu Tanaka. It utilizes the Game Boy Color's infrared port and has a built-in rumble feature. It is compatible with the Game Boy Printer. Because the game must use the Game Boy Color's IR sensor, the game will display an error screen when inserted in a Game Boy or a Game Boy Advance, being one of the only Game Boy Color games that the GBA does not support. Players use the infrared sensor on the Game Boy Color to find artificial light sources, to which the Game Pak responds by rumbling.