Sure! Here's an example of a simple piano game implemented in a single HTML file using JavaScript:
Piano Game
In this game, each piano key is represented by a div element with the `key` class and a unique id. When a key is clicked, it triggers the `playSound` function which creates a new Audio object and plays the corresponding sound file.
You can provide your own sound files for each key by creating a folder named "sounds" in the same directory as the HTML file and adding the sound files with filenames as specified in the `getSoundFilePath` function.
To play the game, you can open this HTML file on a smartphone, and when you tap on the keys, it will play the corresponding sound.