Sure! Here's a simple scary game implemented as a single HTML file, utilizing JavaScript and enclosed in script tags. The game can be played on a smartphone and incorporates pictograms to enhance the gameplay experience. Please note that this is a basic example and can be further expanded and enhanced based on your specific requirements.
In the game, you would control the blue player pictogram on the canvas using touch events on your smartphone screen. The objective is to move the player pictogram close enough to the red monster pictogram (scary monster) to "kill" it. Once the player touches the monster, an alert message will be displayed, indicating victory.
Remember, this is a basic example to give you an idea of how the game can be implemented. You can expand on this by adding additional gameplay elements, graphics, sound effects, and more to make it a complete and engaging scary game.