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Quantity
1
A thrilling new adventure in the best-selling series - filled with puzzles, riddles, secrets, and surprises!
Prepare to test your wits and wisdom in the world's most exclusive puzzle competition - the Planhart Challenge - founded in 1973 by...
Reviews
4.6
62 ratings
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WOW T/11 the presentation was absolutely amazing , the box so beautiful i can’t even express how this is the single handily best set of playing cards ive ever gottten.! Box Two with a box of just amazing things.!! A++++
P-Wingz · April 18, 2025
The first Box One was super fun and exciting. I’m very much looking forward to unboxing this puzzle and having a go with it.
Also the delivery was super speedy and hassle free. Thank you NPH & Theory11 🤘🏻
J
Justin · February 24, 2025
Box two arrived in time. Safe, delivered perfectly.
The game was absolutely fun with different twists and turns. All these things to keep going to solve the problems along the way, until you get to the end. So much fun, love theory11 games !