Brilliantly simple typeface by designer Neal Fletcher. He shows the break down and components of the typeface by creating an almost 'meccano-esq' kit and making a physical version. The photos show how all the fonts are made up of about 12 individual elements. Very childish looking but extremely legible and a brilliant concept.
The bouwen website has a great feature where you can dissect each letter to see which parts are needed to construct each character and also a page to create your own word board, aptly named 'The Playground'.