This master thesis describes the design, evaluation, and enhancement of a mobile game to encourage interpersonal interaction. The design was created based on a design workshop for creating design ideas for this type of game and a study in communication theories. The design ideas from the design workshop was used together with a pragmatic approach of the communication theories to create the puzzle game, JiggyTime. JiggyTime was evaluated as a means to encourage interpersonal interaction between people who did not know each other beforehand. This was done by continuously enhancing the design through the evaluation. The results showed that it was possible to make people interact on an interpersonal level by playing the game, although, it required the interaction to be forced through the game design.