Sure! Here's a simple horror game implemented as a single HTML file using JavaScript. The game is designed to be played on a smartphone and uses pictograms for a spooky atmosphere.
In this game, there's a spooky pictogram displayed on the screen. When the user taps/clicks on it, a jump scare picture is shown and an alert appears after 2 seconds to indicate that the player got scared and the game is over. The game can be reset by tapping/clicking on the pictogram again. You can replace the `emozi_all/game.png` and `emozi_all/pictogram.png` with your own scary images to enhance the horror theme.