Quantity   Component name
1 × Game Boy Should work with Game Boy, Pocket, Color and Advance.
1 × Zinger Joystick for the Nintendo Entertainment System by Beeshu Inc.
1 × Game Link Cable Connects the Zinger with your Game Boy after some modification.
1 × Flash cart Flash carts enables playing homebrew software on Game Boy. I'm using EverDrive-GB by Krikzz.
1 × 74x1G04 Inverter gate needed as the Game Boy and Zinger expects different clock polarity.