Sure! Here's an example of a simple game using JavaScript that involves water movements and shading. This game assumes smartphone operation and uses pictograms:
In this game, a circular container represents water with a moving animation. The water container has shading applied to create a visual effect on the water's surface. When the user taps or clicks on the water, an alert will appear with the message: "You splashed the water!"
You can save this code in a file with a .html extension, open it in a browser, and interact with the game by tapping or clicking on the water to see the splash effect.