Err

Where science meets magic and fun meets education!

Books

Enter If You Can – LOCKED VERSION
This limited edition version of Peter Hajek's book on puzzle boxes has a built in puzzle lock for you to solve!
100.00
Enter If You Can - The Art of Puzzle Boxes
A comprehensively illustrated hardback book that explores the fascinating subject of puzzle boxes...
29.00
Poemotion 2
The abstract graphic patterns in this slim volume start to move as soon as the reader overlays them with the special film supplied with the book.
18.00