The Game Boy "Controller Kensa" cartridge is a test cart that allowed ##Nintendo## Service Representatives to check the buttons on a Game Boy (or an SNES controller if it is in a Super Game Boy). This cart has unused test music and unused graphics from the games Alleyway and Super Mario Land.

Lionel Simmons missed two games for the Sacramento Kings in his 1991 NBA rookie season due to tendinitis in his wrist and forearm from playing the Game Boy too much.

Turning on the Game Boy Printer while holding the Feed Button will print a test image of Mario saying "Hello!"

Due to South Korea banning Japanese cultural imports at the end of World War II, the Nintendo Game Boy was distributed by South Korean company Hyundai, and was named the Mini Comboy.