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🧩 Unlock your brain’s full potential—one puzzle at a time!
399 Games, Puzzles & Trivia Challenges is a scientifically designed brain training book featuring a diverse collection of puzzles that target six essential cognitive functions. With difficulty levels ranging from easy to expert, it offers a fun, daily 10-15 minute workout proven to stimulate neurogenesis and keep your brain young, agile, and sharp.











| Best Sellers Rank | 89,564 in Books ( See Top 100 in Books ) 8 in Silver Surfers 217 in Trivia Games (Books) 454 in Quiz Questions |
| Customer Reviews | 4.6 out of 5 stars 7,648 Reviews |
C**E
Good variety of puzzles
This brain training book for adults is really useful and has a good variety of puzzles to solve to keep your brain active. I particularly like the fact that that it’s is very informative at the start of the book. Plenty to keep you going for a while. Very good value.
I**M
Fun
Fun but I’m not American so don’t know some of the general knowledge questions
C**E
Great if you’re from the US. Some good universal stuff…
Some good universal games but sooo many US references like tv Jingles, shape of US states. Nice book though.
S**L
Amazing book
Great book
T**S
Very disappointed
Quite expensive for a puzzle book. It should be made clear in the description that this is for Americans . I feel cheated as I was greatly looking forward to it Many questions useless as aimed at America.
J**N
good
fun and interesting tests, but lots of questions about the USA so if you don’t know a lot about it or live there, a lot of the questions are a waste
N**E
Not fun
Too many American based questions
E**K
USS content not appropriate
A mixture of general knowledge and lists with a few brain teasers. Some types of puzzle repeated. Many of them rely on popular US culture and history, so impossible for us Brits, eg. Finish the jingle and Alma's shopping list, which are for products we don't have. Disappointing.
M**.
Special and Unique!
5 plus stars! Excellent and unique books by this author, challenging and so much fun! The best part...they are different than all other puzzle books I've seen. NEW ways to challenge your memory and thought processes! Especially perfect for seniors who enjoy variety, trying new word and memory puzzle types.
P**S
Einer der besten Rätselbücher!
Ich bin ein richtiger Fan von Logik und Matherätsel. Das Buch ist genau das richtige für mich und meiner Freundin. Wir haben richtige Rätselstunden mit dem Buch.
A**.
America only.
It is only for people very very femilier with Amiracan culture and its history.
L**N
Perfect gift for retiree
This book is fun and educational. It is based however for the USA, being a Canadian It would be even better if it had general overall information.
D**N
Lots of Variety
This is a large collection of puzzles with a great variety of puzzle types and varying skill levels. Most puzzles and answers seem fairly easy (which give you a sense of accomplishment), however there's always a few in each puzzle that are a little more difficult and make you think a little harder, which is the whole point. I would recommend this book.
Trustpilot
3 weeks ago
2 weeks ago