NBC’s new game show “The Wall,” is a heart-stopping game with more than $12 million on the line. This dwarfs “Who Wants To Be A Millionaire.” It’s kind of like a giant Plinko game, The Wall is four-stories high. The rules are simple: Get a question correct and a green ball will fall down the wall and add the value of the slot to the players’ winning total. Miss a question and an ominous red ball with fall and deduct the value from the teams’ total. Teammates have to work together to build a huge cash prize.