Card game:Monad

Monad is a 1969 card game published by 3M Games company as a part of their 'Gamette' series of small games. A matching game which prefigures later similar card games, it was designed by legendary game designer Sid Sackson. This special package was used early in the series, it is called the "butter box" package. Later gamette games came in more standard small bookshelf style packages.