For your consideration, here is the Game Boy Dr Mario Game Cartridge, with case, Nintendo, no. DMG-VU-USA, made in Japan. The game cartridge label has some light wear on it.

The game has been tested and it starts right up. Game play photos were taken using a SNES Game Boy adapter. The game cartridge and case will be mailed in a box, for protection. Item pictured is the actual item up for sale and comes from a non-smoking household. (234.280n-.5bx)