Tap the numbers or letters on the grid in ascending order (1→2→3… or A→B→C…) as quickly as possible. Choose a grid size and mode (numbers or letters). Start the timer and tap the blocks sequentially. Correct taps turn green and lock; incorrect taps flash red. The timer stops when the last block is tapped, displaying your completion 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!