Bat
Microbats make use of magnetoreception, in that they have a high sensitivity to the Earth's magnetic field, as birds do. Microbats use a polarity-based compass, meaning that they differentiate north from south, unlike birds, which use the strength of the magnetic field to differentiate latitudes, which may be used in long-distance travel. The mechanism is unknown but may involve magnetite particles.
Magnetic Joe
When Joe passes near a magnetic cell his magnetism activates. The player can see a lightning effect between Joe and the magnet, and Joe moves towards the magnet. As he moves closer to the magnet, his movement and rotation changes. The player can control the ball's movement by timing when the magnetism is activated. Different magnets push or pull the ball in different directions and are marked accordingly.