Dr. Mario DX
Dr. Mario DX is a hack for the Game Boy Color.
About this hack
Dr. Mario DX is a hack for the Game Boy Color. In short, it adds color. The full list of changes, the credits and the instructions are on the creators' page.
Playing it
The patch is applied to your own copy of Dr. Mario DX, following the creators' instructions. The game itself is not included and is never linked here.