Sure, here's an example of a merge game implemented as a single HTML file using JavaScript. The game is played on a smartphone and uses pictograms for merging elements.
To play the game, you can copy this code into an HTML file, save it with a `.html` extension, and open the file in a web browser, preferably on a smartphone. The game will start automatically and the elements on the grid will continuously merge as per the merge logic. The grid will be rendered on a canvas, using the pictograms for each element.