My game group tried a 12-hour session of Twilight Imperium... it ended with a pizza box fort

Remember my friend's Catan game that turned into a full-on cold war. He traded all his wood to one guy early on, then the guy refused to give him any brick later. My friend spent the next two hours just quietly moving his robber to block that player's tiles every single turn, never saying a word to him. The rest of us were just trying to build roads while they had this silent feud going on across the table. It got so tense his wife finally made them shake hands.