Sure! Here's a simple Zombie shooting game implemented as a single HTML file using JavaScript. To play the game, you need to click/tap on the zombie pictograms to shoot and eliminate them. Please note that this is a basic game, and you can add more features and enhancements as per your requirements.
Zombie Game - Shoot Them All!
Score: 0
Game Over!
In this game, there are three zombie pictograms displayed initially. When you click/tap on a zombie, it gets eliminated, and your score increases. The game keeps spawning zombies randomly, and you need to aim and shoot them to earn points. The game ends when you miss clicking a zombie, and the "Game Over" message is displayed along with your final score.
You can replace the `<img src="emozi_bear.png">` with actual zombie pictogram image URLs of your choice.