Theory 11 - Box TWO by Neil Patrick Harris (EN) ^ Oct 3 2025

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: Your very first choice will set you on a unique path, and there’s no going back. Are you ready to step up to the challenge? Box TWO isn't just bigger; it’s deeper, smarter, and packed with twists only someone like Sir Eriick Planhart—one of the world's most acclaimed pioneers in mathematics and physics—could dream up. Internet access is required!

THE ULTIMATE CHALLENGE: Expect layers within layers that’ll make your brain do somersaults, and challenges that demand you lean on your fellow playing partners for answers. Think you have what it takes to beat Box TWO? Time will tell, but let’s just say that the ultimate puzzle experience awaits those brave enough to try. Let the game...begin!