Sure! Here's a simple game that revolves around stealth, implemented as a single HTML file using JavaScript:
This game allows you to control a player symbolized by a blue square on the canvas using touch events on a smartphone. The goal is to catch a target symbolized by a red square that appears at random positions. Each time you catch the target, your score increases, and the target will disappear for 2 seconds before reappearing at a new position. The game continuously updates the canvas and displays the score while you play.
Please note that this is a basic implementation to demonstrate the concept of the game and can be expanded upon with additional features and improvements according to your requirements.