Tap the screen to begin your journey in 'Big Hand'. Move your hand left or right to collect dumbbells and increase its size. Avoid red dumbbells as they decrease your hand's strength. Time your movements to make your way through obstacles without touching them. Once your hand reaches its maximum size, click to execute a devastating blow to the villain. Progress by defeating villains to access new levels. Keep in mind that speed and precision are key to excelling in this game.