Sure! Here's a simple game where you, as a survivor, need to kill all the zombies. You will be represented by a green pictogram, while the zombies will be red pictograms. This game assumes smartphone operation and will be implemented as a single HTML file. Below is the code:
To play the game, simply copy the above code into a new HTML file and open it in a web browser. You will see a canvas with a green pictogram representing you (the survivor) and three red pictograms representing the zombies. Touch and drag on the canvas to move the survivor, and try to avoid the zombies.