Sure, I can help you create a simple game using JavaScript enclosed in HTML script tags. Here's an example of a game where you need to avoid particles using smartphone touch controls:
In this game, particles are randomly generated on the canvas, and the objective is to avoid colliding with them. The player, represented by a blue circle, can be controlled using touch gestures on a smartphone. If the player collides with a particle, the game will end.
Please note that this is a basic example, and you can modify and enhance it according to your specific requirements.