Sure! Here's an example of a simple game implemented in a single HTML file using JavaScript and enclosed in script tags. This game can be played on a smartphone and uses pictograms for a better user experience:
Pictogram Game
In this game, there are five pictograms displayed on the gameboard. The objective is to click on each pictogram to make it disappear. Once all the pictograms are clicked, a congratulatory message will appear. Feel free to customize or enhance the game as per your preferences.