Sure! Here's a simple horror game implemented as a single HTML file using JavaScript, enclosed in script tags, and designed for smartphone operation. Please note that this is just a basic example and not a full-fledged game.
This template sets up a basic game loop where you can implement the actual gameplay logic, such as movement, interactions, and win/lose conditions. You can use pictograms or images to represent the game elements. Remember to replace the comments with your own code to build the actual game.