Tangram is China’s traditional game that has been handed down as a game board of wisdom. In this game, a regular square is divided into 7 pieces, which makes for attractive ideas. As a game that is also very traditional in Korea, a host usually offers Tangram as an activity while food is being prepared for visitors. The main characteristic of Play Sandwich is the packaging that resembles the pieces of Tangram. Play Sandwich incorporates a game of Tangram in ‘sandwich shapes’. Simultaneously, users can enjoy eating their similarly divided sandwiches. Since each set is composed of 7 triangular pieces of sandwiches, this can become a group activity of a game over the sharing of sandwiches.