This page follows the students work of seminar course; PLAY – Surface Active Structures Seminar By Manja van de Worp This seminar explores play as a method for design of geometric structures. In order to play, we need to understand the rules of the game, i.e. the specific interaction between its components; “How does a structure and its internal and external inputs evoke behaviour, a specific relationship between action and reaction?” During the course we aim to unlock and generate specific structural behaviour for surface active structures which have inherent architectural qualities. To find these inherent qualities, we investigate the direct structural links between geometry, grid, component and connection, using system thinking. These unique relations resulting in specific performance will be researched using both physical and digital experimentation. We conclude the course with the design of our own specific relation & methodologies for structural design of surface active structures and apply them in both finite element models and in small scale prototypes and showcase new organisations of elements relating structure and form.