Your goal is to clear the field of all goals and tiles. To clear a goal, slide a tile of equal value onto it. Combine tiles by sliding one onto another. You can combine tiles or score goals from a distance, as long as there is a clear path, just release your starting tile on top of your destination.
NumberTiles comes with 3 game modes:
Levels - 100 levels of increasing difficulty. Get gold/silver/bronze stars depending on how many moves it takes you to finish a level.
Ranked - randomly generated levels that quickly progress in difficulty. Once you make a mistake, your run is over and you must start at rank 1 again. How high can you make it?
Random - play an endless supply of randomly generated levels.