Sure! Here's an example of a simple merge game implemented as a single HTML file using JavaScript and enclosed in script tags:
Game Over!
You can save the code above into a `.html` file and open it in a web browser on your smartphone to play the game. The game is based on the popular 2048 merging puzzle game, where the player needs to combine tiles with the same number until they reach the tile with the value of 2048 or until there are no more valid moves.