MiniPiano developed in JavaScript.
https://lrusso.github.io/MiniPiano/MiniPiano.htm
- Keyboard input implementation.
- Fixed aspect ratio to fit the screen.
- Implementing the landscape mode in mobile devices.
- Fixed first touch in order to enable the audio Context.
- Allowing the user to install it as a Progressive Web App.
https://phaser.io/examples/v3/view/input/multitouch/multi-touch-test