2048 is a simple yet addictive puzzle game where the goal is to slide numbered tiles on a grid to combine them and create a tile with the number 2048. Players swipe in four directions (up, down, left, right) to move the tiles, which combine when they touch another tile with the same number. The game continues until the player creates a 2048 tile or the grid is full and no more moves are possible. The game is celebrated for its straightforward mechanics and challenging gameplay that keeps players coming back for more.