Sure! Here's a simple scary game using JavaScript and pictograms that you can play as a finished game. It's implemented as a single HTML file enclosed in script tags:
Scary Twin Game
In this game, two twins are displayed as pictograms. One of the twins is randomly chosen to look at the user. When the user taps on a twin, a message will appear indicating whether the chosen twin is the scary one or not. If the user taps on the scary twin, it's game over.
Make sure to replace "emozi_rabbit.png" and "emozi_apple.png" with the respective pictograms you want to use for the twins.
You can save this code in an HTML file and open it in your mobile browser to play the game.