Sure! Here's a simple implementation of a horror game as a single HTML file using JavaScript. The game is played on a smartphone and it includes pictograms to represent different elements. Please note that this is a basic example and can be further improved upon.
Horror Game: Runaway Maid
Tap/click the screen to explore the darkness and run away from the giant cat monster!
In this game, the screen initially appears as darkness. When the player taps or clicks the screen, the exploration begins, and the darkness fades away to reveal a gray background. The player is then prompted to click again, simulating the encounter with the giant cat monster. After a few seconds, a "Game Over" message is displayed, indicating the end of the game.
You can customize the game further, add sound effects, improve the graphics, or enhance the gameplay based on your preferences.