Sure! Here's a simple game called "My Singing Jelly Monsters" implemented as a single HTML file using JavaScript:
My Singing Jelly Monsters
Drag the objects to the monsters to make some music!
To play the game, simply open the HTML file in a web browser on your smartphone. You will see three monsters (represented by pictograms) and several object containers. Drag the object containers and drop them onto the monsters to make them play music. Enjoy!