Sure, I can help you create a simple game using HTML and JavaScript. Here's an example of a game where you need to avoid obstacles by moving a character using smartphone gestures. I'll use pictograms to represent the game elements.
To run this game, save the code in a `.html` file, open it in a web browser on your smartphone, and tilt your device to control the character and avoid the moving obstacle. The goal is to survive for as long as possible without colliding with the obstacle.
Note: This implementation uses the `mousemove` event, which is specifically for mobile devices. To test it on a desktop browser, you can use browser developer tools to emulate motion events or modify the code to use arrow keys or mouse movements for control.