Sure! Here's an example of a simple game called "Merge Game" implemented as a single HTML file. It utilizes JavaScript and can be played on a smartphone. The game involves merging pictograms to achieve higher values.
To play the game, save this code as an HTML file (e.g., "merge_game.html") and open it in a web browser on your smartphone. The game board will be displayed with a score counter and a "New Game" button. Pictogram cells are displayed on the grid. To merge pictograms, tap on any cell. The goal is to merge and reach the pictogram that represents a trophy (🏆). If you achieve that, an alert will notify you that you won, and you can start a new game by clicking the "New Game" button. Enjoy playing the Merge Game!