Medieval Tavern Escape

One day you were walking in the park near the big lake, where once stood the castle. Now there are only ruins. You have come to a strange object that you suffered in time to the Middle Ages, when the castle was intact. You are very scared, and then you become interesting to see people's lives. You went to the tavern and drank a lot. You woke up, locked inside the room. Look for the key to the door.