Tap numbers or letters on the grid in ascending order (1→2→3… or A→B→C…) as fast as possible. Choose the grid size and mode (numbers or letters). Turn on the timer, then tap the tiles in sequence. Correct taps turn green and lock; incorrect taps flash red. The timer stops when the last tile is tapped, displaying your finishing time. Challenge yourself to beat your best record! This game trains focus, visual perception and cognitive agility, making it perfect for brain training. Practice daily to improve speed and concentration. Enjoy the challenge!