The screen displays 16 colored squares in red, blue, green, and yellow. Tap once to start the game. Once it begins, the background will rapidly blink one of the four colors. Your task is to select a square matching the blinking color to remove it. If you pick a square with the wrong color, you lose. The game continues until all squares are cleared, and you win by successfully removing every square. Aim to complete the challenge as quickly as possible to achieve the lowest record time!