Mahjongg is a peaceful matching game built from a layered tile board. Your task is to clear the board by tapping two free tiles that show the same symbol. A tile is "free" only when nothing sits on top of it and at least one side is open, so you must look carefully and choose an order that keeps the board playable. Work layer by layer, and the whole pattern clears away. If you get stuck, a shuffle button gives you a fresh arrangement.
This game is a wonderful exercise for visual attention and short-term memory. Spotting matching pairs among similar symbols trains your brain to notice detail and hold several possibilities in mind at once. The slow, deliberate pace is naturally relaxing, which is why many older players use it to unwind in the evening. Because there is no timer, you can think as long as you like. It is free to play, needs no download, and the tiles are sized for comfortable tapping on any screen.