Sure! Here's an example of a simple HTML-based horror game called "Doors", focusing on smartphone operation and using pictograms. Please note that this is a basic implementation and can be expanded upon to enhance the gameplay experience:
Doors: A Horror Game
Welcome to the haunted mansion. You are on the first floor, and there are 100 floors above you.
Select a door to enter:
In this game, you start on the 1st floor of a haunted mansion and have to keep selecting doors to progress through the floors. If you select the correct door matching the current floor number, you advance to the next floor. However, if you select the wrong door, a horror event is displayed, and the game options are cleared. The game continues until you reach the 100th floor, winning the game, or encounter a horror event that ends your game.