Sure! Here's an example of a simple Merge Game implemented as a single HTML file, using JavaScript and enclosed within script tags. This game can be played on a smartphone, and I have used pictograms to represent the game elements:
Merge Game
Swipe to merge identical tiles and reach the highest number!
This HTML file sets up the basic structure of the game, including the game board and tile elements. It also includes JavaScript code for the game logic, generating tiles, updating the board, and handling user input (both using arrow keys and touch events). You can test it by opening the file in a web browser, or by copying the code into a new HTML file.