Game Boy

Droneboy is a drone-music cartridge for the Game Boy, developed by Purefunktion and sold by the chiptune hardware maker HobbyChop. It generates endless sustained tones and drones across the Game Boy's four sound channels, letting you shape volume, duty and frequency and play or sequence chords.

 

This is version 1.09, which adds new navigation, a BPM page, a chord sequencer, MIDI support and lower-sounding wave types, and is MIDI-enabled for use with an Arduinoboy.