Build a bridge with your finger to save the guy! In front of you there's a large pool of water. To cross it and reach the next level, press the left mouse button or your finger and drag on the water from the starting position to draw a bridge. CAREFUL, though: the guy will immediately run for it, no matter where you bridge leads. If you're too slow, he will just fall in the water and it will be game over! Draw the bridge around obstacles and watch for the unit count: you can't just build a bridge as long as you like!