Color Stack Challenge is a fast puzzle race game based on a viral trend. Each round starts with a challenge card showing a mixed ring layout; both players match the setup on their board, then race to rebuild solid color stacks one ring at a time, moving only to an empty post or a matching color. Kids love the bright rings and quick wins, while adults appreciate how one smart move can flip the whole puzzle. Since both players move at once, there's no waiting, just fast stacking and a dramatic finish every round. It builds problem-solving and planning skills, making it a great family gift idea. Inside the box are two racks, 80 colorful rings, 50 pattern cards, and instructions.