Sure, here's a simple game called "Survive the Spider" implemented as a single HTML file with JavaScript using pictograms:
Survive the Spider
In this game, you control the player (represented by a pictogram) using the left and right arrow keys on your smartphone. The objective is to avoid getting caught by the spider (also represented by a pictogram) that moves randomly on the gameboard. If the player collides with the spider, the game is over and an alert message will be displayed. You can then restart the game by tapping the OK button in the alert message.
Note: You would need to replace the image file paths "emozi_all/player.png" and "emozi_all/spider.png" with the actual paths to your chosen pictogram images.