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Unbound Cain's Jawbone is an innovative interactive novel by Edward Powys Mathers, blending immersive storytelling with challenging puzzles. Ranked among the top 150 in puzzles and logic games, and boasting a 4.6-star rating from over 4,300 readers, it’s a compact, highly engaging brain teaser perfect for professionals seeking a unique intellectual challenge.

| Best Sellers Rank | #37,600 in Books ( See Top 100 in Books ) #173 in Puzzles #200 in Logic Games & Brain Teasers #429 in Hobbies & Games for Young Adults |
| Customer Reviews | 4.6 out of 5 stars 4,365 Reviews |
R**R
Great Gift!
Bought this as a gift for a friend who likes mysteries. It's suppose to be fully interactive for the reader and makes them feel immersed in the mystery they are trying to solve.
M**A
Amazing challenge
If you have the patience, 100% recommend
S**H
Love
Love it
S**R
Book
Good
A**N
Not what’s advertised
This crime novel was advertised as a a collection of cards so all you have to do is put them in order. But this came as a book with cover and scissor marks on the page. I’m not cutting all 100 pages, too much of a hassle.
K**O
Good quality
Bought it as a birthday gift! Came exactly as described!!
D**H
I can't solve it
I thought it would be fun but it's not.
O**M
It's not an easy puzzle
It's just a book. It's what's printed in it that matters. The puzzle is very interesting. It might take me a couple of months to solve if I'm being honest
J**N
Great!
Ok but It’s not packed so it was probable a bit damaged in transport. However, I’m so excited to read it and try to solve it!! Arrived super quick
A**E
Bonne chance à ceux qui jouent !
Tellement dur de résoudre l'énigme, bon courage !
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