Check the listing for details. Nintendo Game Boy Four Player Adapter DMG-07. Condition: Used, Made in Japan. Listed at 9.49 USD. The Nintendo Game Boy Four Player Adapter DMG-07 is a wired adapter designed for the Nintendo Game Boy platform, specifically for the Nintendo Game Boy 4 model. Manufactured in Japan in 1990, this adapter allows up to four players to connect and play games on the Nintendo Game Boy system. With the trusted Nintendo brand behind it, this adapter provides a seamless gaming experience for friends and family to enjoy together. Perfect for multiplayer games, this adapter enhances the gaming experience and allows for more players to join in on the fun.