I wrote a Javascript MIDI parser library for the OP-Z (https://github.com/nbw/opz) to use in conjunction with the Web MIDI API.
One of the examples I wrote was Tetris:
https://tetris.nathanwillson.com/
I hope you enjoy it. I will be posting more projects I’ve made here soon.
I wrote this library because I don’t want to write Unity for make videos and I don’t want to spend a ton of money on a DMX lighting rig, but I do have an external monitor and I can program. So voila.
Feedback is welcome. If you’re a programmer with some js chops, make something sweet!