Sure, here's an example of a simple Merge Game implemented as a single HTML file using JavaScript and enclosed in script tags:
Merge Game
Score: 0
To play the game, simply open the HTML file in a web browser, and you can move the tiles on the game board using the arrow keys. The objective is to merge tiles with the same value and reach the highest possible score. The game will continue until there are no more available moves or the game board is full.