theory11 Box TWO by Neil Patrick Harris A thrilling new adventure in the best-selling series - filled with puzzles, riddles, secrets, and surprises! A NEW ADVENTURE Prepare to test your wits and wisdom in the world's most exclusive puzzle competition - the Planhart Challenge - founded in 1973 by Sir Eriick Planhart! From the moment you open the box, you'll be partnered with other expert puzzlers around the globe, each one as dedicated to reaching the finish line as you are! LET THE GAME BEGIN! Y