Sure! I can help you create a simple 2D zombie shooting game with points using JavaScript in a single HTML file. Here's an example implementation of the game:
In this game, you control a player represented by a green circle using the arrow keys on your smartphone screen. The objective is to avoid colliding with the red circles (zombies) that spawn randomly on the screen. Each time a new zombie spawns, you earn points based on the total number of zombies present.
Feel free to modify or customize the code to suit your preferences. Have fun playing!