[Yugi Starwind]

If you own a clear blue GBA aka Glacier , take a look on the inside of the battery cover and hold it up to a mirror, or just look at it. It says Game Boy Backwards. another secret is if you put a GBA cartridge in the system,and hold A,B,Select and start when the GBA logo comes on the screen. the word Nintendo will dissapear from the bottom of the screen hit A or B for an old Mario sound from the SNES era.(The second part works with any GBA)