The object of game is to select a combination of tiles that add up to the goal number.
For instance, to add up to 19, you may click on a 7, 8 and 4. When you reach the goal, a new goal is generated. The game ends when a goal is generated that can not be reached with the tiles left on the board. Your score is based on how fast you are able to reach the goals, and how many tiles you used to get to the goal, every tile scored 50 points, choose your combinations quickly to recieve time bonus points. When the game is over, you lose 500 points for every tile left on the grid.