After months of preparation, my mobile game for iPhone and iPad has been put online: SWARM-EE is a simple, though new kind of games, because it uses, for the first time, the magnetic sensor of the smartphone for gaming. A steel ball has to be navigated across a labyrinth, permanently dragged by the force of magnetism and magnetic fields. The game has been proposed and produced at the occasion of a scientific space mission measuring the Earth’s magnetic shield. The idea, project management and iteration was my job. Designed by Christine Neigenfind and coded by Björn Bergstein.