Sure, here's an example of a simple merge game implemented as a single HTML file using JavaScript:
Merge Game
Combine tiles to reach 2048!
This HTML file sets up the basic structure for a merge game. It includes a grid, generates random tiles, handles key presses, and has placeholders for functions to implement the logic for moving tiles in different directions. The game starts automatically and can be played using arrow keys on a smartphone or keyboard.
Please note that this is an incomplete implementation, and you'll need to fill in the logic for moving tiles in different directions.