In case you don't have enough problems in your life..here are 330 more! The Big Box of Brain Stumping Fun features riddles, including logic problems, visual conundrums, lateral thinking problems, and world riddles. Noggin Workshop's The Big Box of Brain Stumping Fun can be played for any length of time. Players determine how many cards they want to play and then count out that many cards. Other cards are put back in the box for another time. One player reads out the question and then places it face up for everyone to solve. Once a player solves the problem, he/she checks the answer on the back of the card. If it's correct, that card is kept as a means for collecting points. If it's incorrect, the player is eliminated from the round, while other players continue to solve the problem. The winner with the most cards is the winner.