GradientDirPick trains your eye to read linear gradient flow. Each round shows several rounded shapes filled with color gradients that run in one of two direction styles, and the prompt tells you which style to tap. Correct picks score. Wrong direction taps earn mistakes, and three mistakes end the game. Early rounds keep horizontal and vertical gradients easy to tell apart, but higher scores shrink angle differences until near-parallel flows become hard to separate. Read the prompt every round, follow the color sweep across each shape, and ignore size or position alone. Clear matching gradients before the board refreshes with tighter, subtler angles.