Sure! Here's an example of a simple game where you can control a glass to catch falling water. The game is implemented as a single HTML file and uses JavaScript. The game can be played on a smartphone.
The game creates a glass and drops of water fall from the top. By moving the glass horizontally using touch controls, the player attempts to catch the falling water with the glass. If the water drop enters the glass, it is considered caught and disappears. If the water drop falls below the screen without being caught, it is considered missed.
Note: This is a basic implementation to give you an idea, and you can enhance it further with additional features, levels, scoring, and more.