Sure! Here's an example of a simple game called "Wally's World" implemented as a single HTML file using JavaScript. The game can be played on a smartphone and incorporates pictograms for added visual appeal:
Please note that in order to run this code, you would need to have two pictogram images, one named "emozi_all/pictogram.png" representing the character and another named "emozi_apple.png" representing the goal object.