arithmetic(6) arithmetic: provide drill in number facts. backgammon(6) backgammon: the game. bcd(6) bcd: convert to antique media. ching(6) ching, fortune: the book of changes and other cookies. hangman(6) hangman: guess the word. maze(6) maze: generate a maze problem. quiz(6) quiz: test your knowledge. wump(6) wump: the game of hunt-the-wumpus.