The game area is 18x14 matrix. In this area a lot of different symbols are distributed at random. On the right you see a pattern of 3x3. Find a copy of this pattern in the big matrix as fast as you can and mark it with the white frame. Instead of this pattern different symbols will appear. The higher the level the more different symbols will be in the game. To find a pattern will become more and more difficult. Besides the shrinking timebar will disturb your concentration. The higher the level the faster it will shrink. Each found pattern makes it longer but not long enough to play an endless game. Definitely the game will come to an end.