Walk Through The Forest

Question: A man had a dream he was walking through the forest. He came up to a house. He knocked on the door and a witch answered. She said, "We'll play a game, if I win I can throw you off the roof of my tall house. If you win, you can throw me off the roof." They play the game and the man wins. He throws the witch off the roof and she doesn't survive. The man continues his walk through the forest. He comes up to a house and a witch lives there. They play a game, he wins, throws the witch of the roof, and walks on. The man comes up to a very tall house, many stories high. The witch who lives there says to play the game. The man wins the game, so the witch loses. The man throws the witch off the roof and she doesn't survive. Then, the man walks up to this 15 story building. The warlock who lives there answer and says to play a game. The warlock wins and the man lost. The warlock threw the man off the roof, but he survives. How did he survive?