Codenames

Vlaada Chvatil's party game won the 2016 Spiel des Jahres and became the default "I don't play board games" board game. Two teams compete to identify their agents using one-word clues — the spymaster gives a clue like "ocean, 3" and their team tries to guess three ocean-related words without hitting the assassin. It scales from 4-8+ players, takes 15 minutes to learn, and generates more arguments per minute than any other game on this list. Over 8 million copies sold.