Next to our work for the Signal festival itself we were asked by Mercedes-Benz to develop an interactive projection on the frontal part of the church of St. Ludmila in Prague. The projection was shown during breaks between the festival projections and served as a sponsored message and clock. We created a first versions for 2017 and updated it with a new visual style and mechanics for 2018. Both of the projections let users input their initials in a web application form and then blow them onto the projection to become a part of a stylized mechanical game. The first one was themed as an engine with a fuel reaction. The second one then developed an idea of an incredible marble machine.