FillLevelPick trains your eye for fill ratio inside hollow shapes. Several outlines appear with different amounts of fill inside them, from nearly empty to almost full. Each round asks you to tap either the MOST filled or the LEAST filled shape. Pick right to score. Pick wrong and you earn a mistake. Three mistakes end the game. As difficulty rises, fill differences become subtler and similar shapes make quick judgment harder. Compare every option carefully, check the prompt, and choose the extreme fill that matches the request. It is a calm puzzle that still demands accuracy under pressure.