At the start of the game, two tiles will be generated automatically. If two tiles with the same number collide with each other, they will merge into one tile and the number will double. Your goal is to use your arrow keys (If you do not know where they are, they are beneath the enter key) to slide all tiles to one side and make them collide and form 2048. You win if 2048 is formed, you lose if there are no more movements possible. Try it and you will understand how this works really quick.