The Treffles deck is made up of 40 cards, each of which is divided into three segments, each of which contain zero, one, two or three dots. Five games are described in the rules: 'The Snake,' a matching game 'Treffles Gin,' an adaptation of gin rummy 'Sluff,' another matching game which has a 'Spite and Malice' feel 'High or Low,' a trick-taking game and 'Partners,' a Concentration/Memory game. - BoardGameGeek