Shoot the aliens - game demo
For audio try this http://codepen.io/gregh/post/recreating-legendary-8-bit-games-music-with-web-audio-api demo: https://codepen.io/gregh/project/editor/aAexRX also: https://tonejs.github.io/ toneJS midi example: https://tonejs.github.io/examples/#jump toneJS midi convert: http://tonejs.github.io/MidiConvert/
View this demo in Codepen: https://codepen.io/ManuelBv/project/full/DdYWPy