Sure! Here's a simple game that meets all your requirements:
To play the game, you need to save the above code in a file with a ".html" extension, and then open it in a web browser on your smartphone (or any device). The game starts automatically, and you control the player by touching and dragging on the canvas. Your goal is to collide with the red enemies to earn points. The more points you have, the better upgrades you can get.
Note that this is a basic implementation of the game, and you can enhance it with additional features, levels, and graphics as per your requirements.