Mensa's Most Difficult Number Puzzles

Prove your logical and numerical abilities against 200 fiendish problems

Mensa's Most Difficult IQ Puzzles

Take on the ultimate challenge by solving these demanding conundrums

Mensa Train Your Brain - Concentration

200 puzzles to unlock your mental potential

Mensa Train Your Brain - Memory

200 puzzles to unlock your mental potential

Mensa Sudoku

Put your logical reasoning to the test with more than 200 tricky puzzles to solve

Mensa Killer Sudoku

More than 200 of the most difficult number puzzles

Mensa Crosswords

Test your word power with more than 100 puzzles

Mensa Logic Puzzles

More than 150 brainteasers to test your powers of deduction

Mensa's Most Difficult Logic Problems

Test your powers of reasoning with exacting enigmas

Mensa's Most Difficult Maths Tests

Prove your arithmetic prowess by solving the toughest numerical puzzles

IFLScience! The Official Science Puzzle Book

Puzzles inspired by the lighter side of science

The Natural History Puzzle Book

Discover the natural world with these perplexing family puzzles!

The Most Difficult Logic Problems

Test Your Powers of Reasoning with Hundreds of Exacting Enigmas

Rubik's Children's Brainteasers

Brain Games