Mighty is a card game invented in 1970s by Koreancollege students. Mighty is mostly played by Korean students, and also by some groups in North America. It is usually played by five people, but the rules can be modified so that it could be played by four or six people. It is a point-trick game with bidding. It is similar to the card game Spades, but has more rules and, therefore, more strategies in playing. Mighty is also similar to Rook and Japanese Napoleon (not to be confused with British Napoleon).