Think outside the box Card Shark, Marble Madness, Sock It to Me & Dizzy Walk In the beginning there's "Jewels of Xanadu" on the cover--where the chances of unlocking the special color-coded safe could be 1 in millions or 1 in 64, depending on where you start. And once you've survived that, another 25 mind-stretching puzzles await. Win a coin-toss game with three friends, calculate the real odds of winning the lottery, predict the chance of pulling...