A full version app for Android, by Super Classic Emulator.

SuperMD Pro (MD/GEN Emulator) lets you enjoy all your favorite classic games on your Android phone. To get started, you need a copy of a ROM file in your SD card or internal storage and tap the “Load ROM” button. Once done, the game will load and you can start playing. 

SuperMD Pro’s HUD can be adjusted by dragging the controls to your preferred position. You can also touch and hold the controls to resize them. The emulator automatically saves your new layout as soon as you exit the HUD settings screen. You can also choose between a three – or six-button pad type. SuperMD Pro supports the following file formats: .gen, .md, .bin, and .zip.