Sure! Here's a simple demo game called "PictoWarfare" implemented as a single HTML file using JavaScript:
In this game, you control a player pictogram represented by an image. Your goal is to avoid colliding with the enemy pictogram images that descend from the top of the screen. If you collide with an enemy, the game will be over, and your final score will be displayed. You can customize the game's appearance by replacing the "emozi_all/game.png" and "emozi_all/enemy.png" images with your desired pictograms.
Note: Make sure to replace the placeholder image filenames ("emozi_all/player.png" and "emozi_all/enemy.png") with the actual filenames of your desired pictograms.