Collection

Numbermania: A Visual Exploration of 0 to 100

Instant Insanity Coding Puzzle - Kubiya

3D Tic-Tac-Toe

The Hat (also known as the "einstein tile") is the first-ever shape in mathematics to tile the plane endlessly without ever quite repeating the pattern.

Codes & Ciphers

Black t-shirt with Golden Mean symbol in white ink

Ivan’s Hinge

Hanayama Enigma Puzzle | Level 6

Gold DNA Double Helix Pendant*

Shashibo - Mystic Ocean

Hanayama Square Puzzle | Level 6

"This handy guide is here to bring the internet age a much needed dose of old-school logic (really old school, a la Aristotle)!”