Sure, here's a simple implementation of a game called "Metroid with Dinosaurs" using HTML and JavaScript. Please note that this is just a basic skeleton for a game and you can modify and add more functionality to make it a fully playable game.
This is a basic game where you control a blue square as a player using the arrow keys on your smartphone. The player can move around the canvas, represented by the blue square. You can expand this code to add different features such as enemies, power-ups, levels, and more.