Problem
1. In the castle game, the player must answer a riddle correctly or provide a password in order to pass through to the Courtyard. Add that to your game.
2. Games often have non player characters (NPC) which are characters that are not controlled by the player. Add an Evil Wizard to the castle game. When you first play the game, the Evil Wizard is in the Courtyard, and his description says that he is in the Courtyard, but then disappears. Every other time after the first time you enter the Courtyard, the Evil Wizard does not appear in the description. But if you visit the Wizard's Room, the Evil Wizard can be found there. You defeat him and win the game.