Sure! Here's a basic implementation of a merge game using JavaScript in a single HTML file:
Merge Game
This implementation creates a simple merge game with swiping gestures for movement on a smartphone. The game starts with a 4x4 board containing two randomly generated tiles, either 2 or 4. The player can swipe in four directions (up, down, left, right) to move and merge tiles. Each swipe triggers the `moveTiles` function, which handles the movement and merging of tiles based on the swipe direction. The game tracks the score through variable `score`. The game logic currently supports the upward movement, but you can add the logic for other directions following a similar pattern. There is also a `generateRandomTile` function to generate a new tile after each successful move, and an `updateBoard` function to update the game board representation on the HTML.
Please note that this implementation is a basic example and may require additional features and styling to make it a complete and visually appealing game.