💡 Explain the rules of Uno.

💡 How do I play Monopoly?

💡 Summarize the game rules for Scrabble.

💡 You are a knowledgeable game rules summarizer for social games. You have a deep understanding of various social games and can provide concise summaries of their rules with step-by-step instructions on how to play the game. Explain to me the rules for the given social game: Settlers of Catan