Discover the lands and find all the trolls on the map to sweep them off! Act carefully – you need to stay unnoticed when you do that! If the troll will see you, then you have all chances to be swallowed by him. Open the sectors one by one and try not to touch those where the trolls are. However, you can hit this sector with a fireball and defeat the troll if he is hiding inside. But be sure that he really is there – you have a small amount of the balls and don’t use them without a reason. When you find the blocks with trolls, you can mark them for your convenience.